Mid-Term Flashcards

(466 cards)

1
Q

Why was the national EMS Scope of Practice Model developed by the National Highway Traffic Safety Administration (NHTSA) in 2006? (please list four reasons listed)

A

-To bring a higher degree of consistency to EMS throughout the U.S
-Improve patient care and safety
-Allow for easier reciprocity (communication/exchange/understanding of info and equipment) between states
-Decrease public confusion by identifying specific national levels of EMS practitioners

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2
Q

What are the four levels of EMS practitioners identified by the National Scope of Practice Model 2019?

A

-Emergency Medical Responder (EMR)
-Emergency Medical Technician (EMT)
-Advanced Emergency Medical Technician (AEMT)
-Paramedic

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3
Q

What is the role and responsibility of EMR’s?

A

They provide immediate lifesaving care to patients while they are waiting for higher levels of responders to arrive.

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4
Q

What are some of the functions and actions that can be performed by the EMR?

A

-basic airway
-ventilation
-oxygen therapy devices
-vital signs
-stabilization of the spine and suspected extremity injuries
-eye irrigation
-bleeding control
-emergency moves
-CPR
-automated external defibrillation
-emergency childbirth care

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5
Q

What is the role and responsibility of EMT’s?

A

They provide basic emergency medical care and transportation

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6
Q

What are some of the functions and actions that can be performed by the EMT?

A

Same functions that can be performed by the EMR but with basic equipment found on an ambulance and plus the other following actions:

-advanced oxygen therapy and ventilation equipment
-pulse oximetry
-use of automatic blood pressure monitoring equipment
-limited medication administration

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7
Q

What is the role and responsibility of AEMT’s?

A

They provide both basic and limited advanced emergency medical care and transportation to patients

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8
Q

What are some of the functions and actions that can be performed by the AEMT?

A

Same functions that can be performed by the AEMT but plus the other following actions:

-use of advanced airway devices
-monitoring of blood glucose levels
-initiation of intravenous and instrosseous (in the bone marrow) infusions
-administration of a select number of medications

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9
Q

What are some of the functions and actions that can be performed by the paramedic?

A

Same functions that can be performed by the EMT and AEMT but they can perform more advanced assessment and patient management skills to provide the provision of the highest level of prehospital care such as:

-advanced assessments
-form a field impression
-provide invasive and drug interventions
-as well as transport

*Their care is designed to reduce disability and death of patients who access the EMS system

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10
Q

What is Quality improvement (QI), also known as Continuous quality improvement (CQI)?

A

It is a system of internal and external reviews and audits (inspection) of all aspects of an emergency medical system

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11
Q

What is the purpose of QI/CQI and how does it achieve this purpose?

A

To provide the public with the highest quality of pre-hospital care.

It identifies aspects of the system that can be improved and they begin to implement plans and programs that will remedy any shortcomings

*It is important to remember QI/CQI generally should not be used to penalize anyone but as an evaluation system geared toward overall system improvement

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12
Q

As an EMT, your role in QI/CQI is to:

A

-Document carefully
-Perform reviews and audits
-Obtain feedback
-Maintain equipment
-Participate in continuing education
-Maintain skills

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13
Q

Why is it important to document carefully for QI/CQI?

A

Pre-hospital care reports that you prepare are studied by QI/CQI communities to spot things such as excessive response times, which might be remedied by redeploying ambulances, OR/AND to identity seldom used skills for refresher training

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14
Q

Why is it important to perform reviews and audits (inspection) for QI/CQI?

A

If you volunteer for QI/CQI committee work or by critiquing the performance of other EMT’s at the scene of a call, you can learn and teach from and to other EMT’s

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15
Q

Why is it important to obtain feedback for QI/CQI?

A

Feedback and practice helps you improve your performance and care so make sure you gather feedback from patients, other EMS personnel, and hospital staff either

*You can gather this feedback formally or informally

Formally: through surveys to patients and hospital staff

Informally: directly asking and seeking advice about your performance after a call from physicians, nurses, or other medical personnel

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16
Q

Why is it important to maintain equipment for QI/CQI?

A

To ensure it is in proper working order. Make sure you conduct preventative maintenance

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17
Q

Why is it important to participate in continuing education for QI/CQI?

A

To reinforce, update, and expand your knowledge

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18
Q

Why is it important to maintain skills for QI/CQI?

A

To reach a level of mastery through continuous practice

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19
Q

To be effective as an EMT, you should have all of the following characteristics?

Hint: give descriptive details about each characteristics

*8 total characteristics

A
  • a calm and reassuring personality ( you will be required to perform assessments while speaking in a reassuring and calming voice to a patient who may be agitated, in shock or in a great deal of pain)
  • leadership ability ( you must be able to assess a situation quickly, take control when appropriate, set action priorities, give clear and concise directions, be confident and persuasive enough to be obeyed and carry through with what needs to be done)
  • good judgment ( you must be able to make appropriate decisions quickly in unsafe or stressful situations)
  • good moral character ( you also have ethical obligations. People trust you with their lives, treat them with respect)
  • stability and adaptability (EMT’s are stressed out, but put your feelings aside until the call is over and seek support with your mental state. Keep the call professional.)
  • ability to listen ( you must be compassionate and show empathy, but also maintain professionalism, confidence and competence.
  • resourcefulness and ability to improvise ( Tools are unreliable and you may need to improvise using the environment, be quick with your thinking)
  • cooperativeness ( be cooperative with other law enforcement, such as police or firefighters)
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20
Q

What are the five emotional stages that come with death outlined by psychiatrist Elizabeth Kübler-Ross on her book On Death and dying?

Hint: give descriptive details about each stage

A

-Denial ( the patient may refuse that death is near to help with the shock and the need to deal with the injury/illness)
-Anger ( Anger may be directed towards you so be empathetic and do not be defensive)
-Bargaining ( the patient will make agreements that will postpone death for a short while)
-Depression ( Patient becomes distant and sad about unaccomplished tasks)
-Acceptance ( patients come to terms with their illness and injury, and the families often need more support than the patient)

*Note that losing your limbs can also make you go through the five stages of grief and you will not typically see a patient go through all five emotional stages of death during treatment. For example, an injured patient may display denial, bargaining or depression, and the terminally Ill patient may be more prepared and display acceptance

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21
Q

How can you help reduce an patient’s emotional burden?

*9 actions listed here

A

-Do everything possible to maintain the patient’s dignity ( avoid negative comments about the patient’s conditions)
-Show the greatest possible respect for the patient ( families will be sensitive to how the patient is treated; watch your attitude, body language, etc. Never give up on the patient and keep the family informed of the situation)
-Communicate ( explain to the patient and the family members of what has happened, what you’re gonna do, and procedures that follow. Only provide known facts, not false assumptions)
-Allow family members to express themselves (Allow family grieve as they wish; scream, cry, vent. Don’t take it personally if it is directed at you)
-Listen empathetically ( honor dying patients wishes and answer the questions of the family members)
-Do not give false assurances ( allow the patient to have hope. Tell them everything is being done and do not confirm that they are dying. The hopeless are the ones often who do the most poorly)
-Use a gentle tone of voice with the patient and family ( explain the situation in a kind tone and understanding vocabulary)
-Take appropriate steps if the family wants to touch or hold the body after death ( If protocol allows, let the family touch/hold the body. Do what you can to improve the appearance of the body. Do not clean or remove evidence such as vomits/blood/secretions or anything else on the patient if it is a crime scene. Permission must be granted by law enforcement to allow families to enter the crime scene and touch the patient.)
-Do what you can to comfort the family ( allow the family to see the patient even if they are unresponsive and encourage talking to the unresponsive patient as they may still be able to hear. Try to fulfill any requests such as going along in the ambulance or praying together with the family if possible.)

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22
Q

What are the three basic types of stress reactions?

A

-Acute stress reaction
-Delayed stress reaction
-Culmative stress reaction

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23
Q

Define an acute stress reaction?

A

It occurs from exposure to a high stress situation. The reaction can be found in the patient, bystanders, you, your partner, or other emergency service personnel. S/S typically occur immediately or shortly after the incident, and may involve cognitive, physical , behavioral or psychological functions.

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24
Q

Described a delayed stress reaction?

A

Post traumatic stress disorder (PTSD) is a typical delayed stress reaction that occurs from exposure to a high stress situation. However the signs and symptoms are not evident immediately. It could be days, months or even years before the patient begins to experience the onset.

*Note that the patient may not understand why he may be experiencing PTSD because time has passed from the incident and it is more difficult to realize the connection and the trauma you carry from that event.

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25
S/S of PTSD?
-Nightmares -Irritability -Insomnia -Inability to think clearly or concentrate -Flashbacks -Increased interpersonal conflicts -decreased ability relate to others
26
Describe cumulative stress reaction?
The result of constant exposure to stressful situations that build over time *Note that cumulative stress disorder is the most common cause of burnout; a state of irritability and exhaustion
27
common S/S of stress reactions?
- irritability with coworkers, family and friends - inability to concentrate - difficulty sleeping and nightmares - anxiety - indecisiveness - guilt - loss of appetite - loss of sexual desire or interest - isolation - loss of interest in work
28
What are the general categories of signs and symptoms that have been identified with stress reactions? Hint: think which systems/categories of your life stress affects
-Thinking: Confusion, inability to make judgments or decisions, loss of motivation, chronic forgetfulness, and loss of objectivity -Physiological: Depression, excessive anger, negativity, hostility, defensiveness, mood swings and feelings of worthlessness -Physical: persistent exhaustion, headaches, gastrointestinal distress, dizziness and pounding heart -Behavioral: over-eating, increased alcohol or drug use, grinding teeth, hyperactivity and lack of energy -Soical: increased Interpersonal conflicts and decreased ability to relate to patients as individuals
29
Define scope of practice?
Identified by state laws, scope of practice are the actions and care that EMTs are legally allowed to perform in their state. Scope of Practice begs the question: Was the EMT allowed by law to do what he did? scope of practice identifies which activities would be deemed illegal if performed without licensure or certification and establishes boundaries among professionals. *You should never perform a skill you know how to perform if it is outside your scope of practice
30
What are the common sources used to define the EMT'S scope of practice?
- national highway traffic safety administration (NHTSA) - national EMS scope of practice model - national EMS education standards
31
Define standard of care?
The care that is expected to be provided by an EMT with similar training when managing a patient in a similar situation
32
What are two principles standard of care deals with?
1) did the EMT provide the right assessment and emergency care for the patient? 2) did the EMT perform the assessment and emergency care properly
33
What are some of the following sources that may be used to define the standard of care?
- recognized and accepted EMT textbooks - the care that would be expected by other EMT's in the community or region. - local and state protocols - NHTSA's national EMS education standards - the EMS systems operating policies and procedures
34
Define the concept of duty to act?
Your legal obligation to provide service, whether you think the patient needs it or not
35
When you are off duty , what are the 3 actions you could legally take when you see someone in need?
- stop and help the victim. (Doing this will create a duty to act. others may not respond to the call because they feel that your response is adequate. You assume certain legal responsibilities and you cannot leave until someone with the appropriate expertise takes over.) - pass the scene and call for help - pass the scene and make no attempt to call for help * this is not true for all states as some of them do require you to act even when you are off duty *Also note, that one of your most important aspects of your duty to your patient is respecting the rights of the patient. You must serve as the patient's advocate, protect and honor their rights, which includes the confidentiality of the patient's medical status, history and records. You must also act to lessen the patient's suffering and provide complete and competent care for your patient which includes emotional care beyond treating their injury.
36
Beyond your duty to act, what other duties do you have?
-A duty to yourself -A duty to your partner -A duty to your equipment
37
What do the duties to yourself include?
-obtain the necessary credentials to practice as an EMT -maintainace of your skills to a good level of proficiency -maintainance of your mental health -maintainace of your physically fit body to be able to perform the duties of the job
38
What do the duties to your partner include?
- ensuring that he or she is physically and mentally fit to provide proper care and take the responsibility of the job - you must be a snitch if you find your partner under the influence of alcohol or drugs
39
What do the duties to your equipment include?
- ensure that all equipment is in proper working order (done at the beginning of each shift) *its negligence if you can't treat a patient due to faulty equipment
40
What is the role of the good samaritan law that was first enacted in 1959, California?
It protects a person who is not being paid for his services from liability for acts performed in good faith unless those acts constitute gross negligence. *The good Samaritan law does not protect you from being sued so always render care to the best of your ability
41
What is sovereign immunity?
Also known as governmental immunity, prevents persons treated by governmentally operated EMS systems from suing the government for civil liability. *This is a type of immunity private EMS companies DO NOT have.
42
What is meant by a statute of limitation determined by each state?
This means the patient only has a certain amount of time to file a negligence claim.
43
define contributory negligence
If a patient contributes in any manner to his own injury or illness and tries to file a negligence claim against an EMS provider, they could be found GUILTY!!
44
In relation to medical direction, you should? (list four points)
-follow standing orders and protocols, as approved by medical direction -establish cell phone, video chat, telephone, and radio communications with medical direction when appropriate -communicate clearly and completely with medical direction, and follow orders medical direction gives in response -Any time there is a question about the scope or direction of care, consult medical direction
45
Define informed consent
When the conscious patient who has the capacity to understand and make an informed and rational decision agrees to the care once they are informed of the care to be provided and the necessary risks and consequences. *Note that you cannot gain a patient's consent purely because they called 911
46
define expressed consent?
When an conscious adult who has the capacity to make a rational decision before treatment is started gives consent either spoken or through non-verbal cues such as nodding *Document everything, even the form of non-verbal cues they used
47
Define implied consent?
Also known as the emergency doctrine, occurs when you assume the patient who is unresponsive or who is unable to make a rational decision would consent to emergency care if they could. for example, a head injury.
48
Define minor consent
Consent to treat a minor must be obtained from a parent, legal guardian, or others with permission. This is because minors are not considered legally competent to accept or refuse medical care. *Minors are considered those under 18 in some states but under 21 in others
49
What happens if you are attempting to get minor consent from the parent or legal guardian but they cannot be reached.
You apply the concept of implied consent, assuming the parent would consent to treat their child if they were there. *document situation and why you treated even though the parent was not present
50
From which type of minor do you not need the parent's consent in order to treat them?
Emancipated minors. this is when they are married, pregnant, a parent, a member of the armed forces, financially independent and living away from home, or one who has been declared emancipated by court decree.
51
define involuntary consent?
Applied when you are dealing with an mentally incompetent adult or with an individual who is in custody of law enforcement or is incarcerated. *often involves a 3rd party such as a legal guardian or an officer from which you must gain the consent from said 3rd party since they must make the decision on their behalf because the individual does not have the legal right to determine their own care.
52
Define intentional tort
An action knowingly committed by an individual that is considered civilly wrong according to the law *common intentional torts within the EMS system include abandonment, assault, battery, false imprisonment, and defamation.
53
What's the difference between intentional tort vs negligence
negligence is a failure to meet the standard of care which is typically permissible, whereas an intentional tort is knowingly committed.
54
Define abandonment?
When you stop treatment of the patient without transferring the care to another competent professional of an equal or higher level of training and certification or licensure *ensure you OFFICALLY transfer the patient into the care of someone competent before you leave. Oral report to a physician, nurse, or other health care worker who is qualified. For example, you can't leave the patient with a unit clerk or with a dermatologist if they are a mutisystem trauma patient. *There are exceptions to this rule. an paramedic or an AEMT can transfer the patient to an EMT as long as the injuries or condition of the patient can be managed by the EMT and no advanced life support skills are needed
55
Define assault V. Battery
Assault is a willful threat to inflict harm on a patient Battery is the act of touching a patient unlawfully without their consent
56
Define false imprisonment or kidnapping
When you transported a patient who has the capacity to understand and make rational decisions even though they refused treatment
57
Define defamation (Slander V. Libel)
When you release information to the public in either a written (Libel) or spoken form (Slander) that is construed to be damaging to the person's character , reputation or standing within the community
58
How does documentation help ensure continuity of medical care? (The primary reason why we document)
When you effectively communicate/document the patient's condition, you give the receiving facility the best idea of what to do, which obtains the highest quality patient care.
59
How is documentation used for administrative uses?
The documentation you provide typically becomes a part of the patient's permanent hospital record. It is used to prepare bills and for submitting records to insurance companies. The information may also be used for statistics regarding the emergency medical service itself such as average response time on scene, time on scene for critical trauma patients, or the number of cardiac arrests patients treated each year.
60
How may the documentation you provide become a legal document?
A run in which you were involved may have been the result of a crime or the incident may have led to a civil lawsuit. In either case, you may have to appear in court. As such, you will refer your documentation. Ensure that your documentation is legible , accurate and complete. include objective and pertinent subjective findings, the status of the patient upon arrival, what emergency care was provided, when the emergency care. etc... Be very detailed and thorough.
61
How can documentation be used for educational and research uses?
Your documentation provides data for researchers studying a whole range of issues. The PCR may be used to track or identify various patient presentations and conditions that may require additional education and training. For example , some scientists and researchers may be looking to discover positive or negative effects of certain interventions at different stages of patients contact.
62
How can documentation be used for evaluation and CQI?
Reviews of documentation are an integral part of the quality improvement process. Remedial courses for EMT's may be based on weaknesses on the documentation. PCRs are also used in medical oversight to determine if EMTs are adhearing to protocols and set standard of care.
63
What are the functions of the prehospital report care (PCR)?
-continuity of medical care -administrative use -legal documentation -educational and research use -evaluation and Continuous quality Improvement (CQI)
64
Define the minimum data set?
The set of data, the Department Of Transportation (DOT) recommends including on all PCRs. An attempt on standardization on PCRs. *Time synchronization is so important when establishing the Minimum Data Set because it helps to gather accurate medical information. Dispatch and medical personnel should have the same time set on their clocks. It helps determine important information such as how long it really was before CPR or defibrillation was initiated in a cardiac arrest patient.
65
What patient information should be included in your minimum data set?
- chief complaint - level of responsiveness (AVPU)-Mental status - blood pressure for patients greater than 3 years old - skin perfusion (capillary refill) for patients less than six years old - skin color, temperature and condition - pulse rate - respiratory rate and effort - patient demographics (age, sex, race, and weight)
66
What administrative information should be included in your minimum data set?
- time the incident was reported - time the unit was notified - time of arrival at the patient - time the unit left the scene - time the unit arrived at its destination (hospital, etc...) - time of transfer of care
67
How would one go about correcting errors on the PCR (paper version)?
1. Draw a single horizontal line through the error (preferably using different colored ink) 2. Add a note with the correct information beside it 3. Initial the entry 4. Include the time and date of the correction, if you ALREADY submitted the report *DO NOT ERASE OR WRITE OVER THE MISTAKE. This could be seen as an attempt to cover up a mistake or falsify the report. *Whenever you correct a PCR, make sure you notify the personnel to whom you submitted the incorrect form to that you made an error and corrected it
68
What should you do if you omitted information from your PCR?
1. Add a note with the correction information 2. Add the date 3. Add your initials
69
How would you fix an error on a electronic PCR?
Most electronic PCR formats provide a method to amend the report that includes a date and time stamp If an error is discovered. If there is no way to electronically amend or submit an emended report, correct a printed copy using the traditional methods described for a paper report and resubmit PCR as it corrected copy.
70
The Federal Communications Commission (FCC) has jurisdiction over all radio operations in the United States, what are some of their responsibilities? *THIS INFORMATION WILL BE ON THE TEST SINCE THIS IS THE WHOLE SECTION WE WERE TOLD TO STUDY. VERY SHORT.
-licences individual base station operations -assigns radio call signs -approves equipment for use -establishes limitations for transmitter power output -assigns radio frequencies -monitors field operations *Not a responsibility but the FCC has also set regulations to limit interference with radio broadcasts and to bar the use of obscenity and profanity in broadcasts
71
Your EMS system's dispatch, perhaps a Emergency Medical Dispatcher (EMD), will typically be your first contact on a run, what is dispatch's job?
-obtain as much info as possible about an emergency -to direct the appropriate emergency services to the scene -to advise the caller how to manage the situation until help arrives
72
What does the Advanced Automatic Collision Notification (AACN) do?
AACN is found as a standard feature in many newer car models. Not only can this technology accurately indicate that's the vehicle was involved in a crash, but it can also provide the exact location of the vehicle and indicate change in velocity during the crash, direction of force, airbag deployment, rollover and occurrence of multiple collisions *According to the 2009 Centers for Diease Control and Prevention Guidelines for Field Triage of Injured patients, AACN can be used to: predict injury severity, determine transportation mode (air v ground), and determine medical facility destination (level of trauma center)
73
At which following points should you communicate with dispatch?
1. To acknowledge that the dispatch call information was received 2. To advise dispatch when the unit is en route to the call 3. To estimate your time of arrival at the scene while en route and to report any special road conditions, unusual delays, etc... 4. To announce your unit's arrival on the scene, request any additional resources and to help coordinate the response. (Some systems require you call dispatch when you reach the patient) 5. To announce the unit's departure from the scene and to announce the destination hospital, number of patients transported and estimated time of arrival at the hospital. 6. To announce your arrival at the receiving hospital or other facility. (Or announce arrival at rendezvous point if one is set) 7. To announce that you are clear and available for another assignment after the patient has been transferred 8. To announce that you are leaving the hospital and on your way back to the station 9. To announce your arrival back at the station *dispatch should be contacted if there is a prolonged on scene time without contact *Note that dispatch records all conversations with initial callers , police, fire personnel, EMT units and receiving facilities. The calls can become a part of a court case. Be professional, concise, and accurate when communicating with dispatch. *Note that dispatch will give you the time after most communications with you. This helps in providing accurate time in your PCR.
74
Your communication with the patient begins before you speak due to non-verbal/body language communication, what are 5 examples?
-Posture -Distance -Gestures -Eye contact -Haptics
75
How is your posture important in relation to non verbal communication?
-Approach the patient with open arms, open hands and relaxed shoulders. This conveys a message of concern. - position yourself at the same level as your patient to indicate that you see the patient as a equal *if the patient is uncomfortable, it can limit communication
76
How is distance important in relation to non-verbal communication? Hint: mention the intimate zone
In american culture , the space within less than 1½ feet of an individual is called the intimate zone. Entering your patients intimate zone may be perceived as threatening. It is best to use a more personal distance of about 1 to 4 feet from your patient when you are communicating with them. You can get close in order to do hands-on/assess them BUT ask and inform your patient about what you need to do before you enter their personal space. Most patients understand the need to enter their intimate zone but those who resist, step back until you establish trust. *NOTE that not every culture abides by American standards with their spatial zones so misunderstandings may occur. consider a patient's culture and nonverbal responses when invading their personal space. *note that 4-12 feet is the appropriate distance to talk to another person without shouting
77
Define Gestures and give some examples
Nonverbal body movements that convey meaning to others. For example, winking , smiling, rolling your eyes, pushing your eyebrows together or any other expression that conveys an emotion. (Not exclusive to facial expressions but could be from any body part) *You should maintain a warm, kind smile indicates your concern and welcomes communication from your patient. *also watch your patients Gestures to see what they are indicating such as anxiety, pain, sorrow, relief, or dismay
78
How is eye contact important in relation to non-verbal communication?
Make and maintain eye contact when you are speaking to the patient to communicate your interest and concern * BE AWARE THAT SOME CULTURES CONSIDER DIRECT EYE CONTACT INPOLITE OR AGGRESSIVE. you may need to adjust your behavior.
79
How is haptics (the study of touches) important in relation to non-verbal communication? Provide examples
Touch can be one of the most effective ways to help calm the patient and express your compassionate and empathy. - holding a hand, patting a shoulder , giving a hug or laying your hand on the forearm * a patient's age, gender, culture and experience may influence how non-verbal communication is interpreted, such as touch. Ask for permission if you sense reluctance
80
In a scene where the accident is unstable or threatening to your life and your patient's, is your priority airway, breathing and circulation or is your priority moving them or treating immediate life threats?
You MUST move them first but follow local protocol to ensure you do not become a additional causality
81
Why should an emergency move be performed?
When there is immediate danger to the patient or to the rescuer *In a an unstable or threatening environment, your priority is to move the patient (not ABC's or immediate life threats) if possible, but you have to follow local protocol to ensure you do not become an extra causality *NOTE that the greatest danger to a patient during an emergency move is spinal cord injury since it is impossible to move a patient quickly while still providing the best protection to the spine and spinal cord. Only perform a emergency move if it is your last option.
82
Under which dangerous circumstances should you perform an emergency move? Hint: list 3
- immediate environmental danger (fire, exposure, explosives) -Inability to protect the patient (uncontrolled traffic, physically unstable surroundings, extreme weather conditions, and hostile bystanders) -Inability to provide life-saving care before of the patient's location or position (need to change a patient's position if controlling hemorrhage, to defibrillate, or to perform CPR)
83
What are the three types of emergency moves?
1. armpit-forearm drag 2. shirt drag 3. blanket drag
84
How do you perform the armpit-forearm drag? (Emergency move)
1. Ensure the patient is on the floor 2. you can move him by inserting your hands under the patient's armpits from the back. 3. Grasp the patient's left forearm with your right hand and the right forearm with your left hand 4. drag
85
How do you perform the shirt drag?
1. Fasten the patient's hands or wrists loosely together, if possible link them to a belt, pants with a small Velcro wrap or self adherent bandage , this will serve to prevent the patient's arms from flopping out of the shirt. 2. Grasp the neck and shoulders of the shirt so that the patient's head rest on your fist 3. Using the shirt as a handle, pull, the patient toward you.Be careful not to strangle the patient. * the shirt drag cannot be used if the patient is wearing only a t-shirt
86
How do you perform the blanket drag?
1. Spread blanket alongside the patient. gather about half into lengthwise pleats (vertical folds) 2. Roll the patient away from you onto his side. Tuck the pleated part of the blanket as far beneath the patient as you can. 3. Roll the patient back onto the center of the blanket and onto his back. 4. Wrap the blanket securely around the patient 5. Grab the part of the blanket that is beneath the patient's head and drag the patient toward you
87
Why should we perform an urgent move?
When the patient needs to be moved for immediate treatment and transport such as someone in a MVA or someone who requires CPR but they're on the couch *For example, indications for a urgent move using the extrication method includes but is not limited to: -Altered Mental Status -Inadequate respiratory rate or tidal volume -Indications of shock (AMS, pale, cool, clammy skin, tachycardia, and increased respiratory rate) -Injuries to the head, neck, chest, abdomen, and pelvis -Fracture of both femurs -Major bleeding
88
A summary of rapid extrication procedure from a motor vehicle is as follows?
1. One rescuer should provide manual stabilization of the head/spine. 2. A second rescuer should apply a C-Collar as a third person places a long back board near the door (I think the driver side) the third rescuer should then move to the passenger seat. 3. The second rescuer should support the patient's thorax as the third frees the patient's legs from the pedals or from under the dashboard 4. The second and third rescuer rotate the patient. In several short, coordinated moves until the patient's back is in the open doorway, and his feet are on the seat 5. Since the first rescuer can no longer support the patient's head, another rescuer should support the head and so the first rescuer exits the vehicle and takes over supporting the head from the door opening 6. The end of the long backboard is placed on the seat next to the patient's buttocks. The first and second rescuers lower the patient onto it. The first maintaining inline stabilization of the head and neck 7. The second and third rescuers should then slide the patient into the proper position on the board. * The most critical factor is that this procedure must be accomplished rapidly and without any compromise to the patient's spine. *Also note that once the patient is extricated, they may (varies by local protocol) be moved off the backboard and placed on a vacuum mattress or on the stretcher. The backboard is used only as an extrication device and not for protecting the spine for further assessment *Rapid extrication should be done when there is abnormality to the the airway, breathing, circulation, oxygenation, and for those with critical injuries and illnesses.
89
How do you perform self-extrication?
1. Instruct the patient to keep his head and neck in a neutral line position. They should keep their nose in line with their umbilicus (naval) 2. Apply a rigid or soft cervical collar, more as a reminder to the patient to not move his head and neck then to provide stabilization itself 3. Instruct the patient to move his body as one unit 4. Instruct the patient to swing his legs out of the vehicle so the front of his body is facing outside the vehicle door 4. Instruct the patient to stand and move out of the vehicle 5. Constantly coach the patient to maintain a neutral in line position *NOTE self-extrication is done when you need access to a patient in the vehicle but someone is blocking them, if this someone is not critically injured, self extrication can be used *The two urgent moves are extrication and self-extrication
90
What are wheeled stretchers? Hint: also tell me how many pounds they can handle
Also called an ambulance gurney or stretcher is the patient carrying device most commonly used by rescue personnel and it is also the safest and most comfortable means to transfer a patient up to 650 pounds. *Note in order to roll a wheeled stretcher, a rescuer at the head pushes and the rescuer at the foot guides *The lift in-type stretcher has been replaced with the role-in or self-loading stretcher, which weighs about 70-75 pounds and is constructed of aluminum alloy. The stretcher uses wheels at the head to simplify the loading and unloading procedure. This significantly reduces the amount of twisting and lifting required by rescuers.
91
What are two basic types of wheeled stretchers? Hint: name them and describe their differences
The traditional manual stretcher: it requires the EMT's to do all the lifting to raise and lower and load and unload the stretcher from in and out of the back of the ambulance. The newer power stretcher: It uses pneumatic, hydraulic, battery (motor) or a combination of mechanics to reduce loading strain. Although these stretchers weigh more than traditional stretchers, up to 140 pounds, some has a power loading device that lifts and lowers the stretcher in and out of the ambulance.
92
What are limitations of the wheeled stretcher? Hint: there are 2 limitations listed here
-Rolling is usually restricted to smooth terrain. However, four rescuers, one at each corner can keep it stable and move it over rough ground. -two rescuers can carry a wheeled stretcher in a narrow space. However, they will need to face each other from opposite ends , the stretcher could be easily unbalanced and the lift and carry require considerable strength.
93
What are bariatric stretchers and devices? (Hint: how much weight can they hold?)
Stretchers that are designed to hold patients up to 1600 pounds in a wheels down position. They have larger wheels for stability, lighter stretcher dimensions and more heavily constructed frames. * Some stretchers are part of the bariatric transport system that includes an ambulance ramp and winch a specialized bariatric ambulance
94
What are portable stretchers? (Hint: in which situations would we use them, I also included the loading capacity; how much weight they can hold)
Also known as a soft stretcher it has a loading capacity of 350 pounds and It is usually made of a continuous tubular metal frame canvas or coated fabric bottom and straps to secure the patient. It is used when the patient must be removed from a narrow space OR/AND it can also be used as an additional support to the wheeled stretcher when there is more than one patient to transport because it could be loaded easily into an ambulance and offloaded easily once in the ambulance. *Portable stretchers come in three models. The basic model, the basic with folding wheels, and the breakaway * most models can be hung inside the ambulance and it is a relatively light stretcher that can be folded in half
95
Describe the pros and cons of using the portable stretcher pole stretcher type?
Pros: -It is lightweight and folds compactly. -the vinyl coded model is easy to clean -It is comfortable for the patient especially when the head is padded Cons: - it is not suitable to be used for a patient when spinal immobilization is necessary unless it is used with a backboard - you must be careful when setting the patient on the ground for long periods of time as soft tissue injuries may occur (If you are going to use this type of portable stretcher, make sure to see that the cross pieces are locked in place. And It is preferable to have four or more rescuers.)
96
When is a stair chair useful? (Also compare a stair chair vs a tracked stair chair)
When a wheeled stretcher cannot traverse narrow corridors and doorways, small elevators and stairways The newer model stair chair is designed with a track that can be lowered behind where the patient is sitting. This track comes into contact with the steps as the patient is moved downstairs and allows the chair to glide down steps with minimal effort exerted by the EMT. It still requires two rescuers, one at the head and one at the foot of the patient for stabilization of the device, but the new design eliminates the need to lift the chair while moving down the steps.
97
What are some contraindications to the usage of a stair chair?
- altered mental status - suspected spinal injury - injuries to lower extremities
98
How would you move a patient up or down the stairs using the stairs chair? Hint: I'm talking about the procedure
Before you begin, explain the procedure to them and make sure the straps are secure 1. One rescuer should stand behind the chair at the head and another rescuer , should stand at the foot facing the patient. a third rescuer , if available should prepare to spot by standing behind the rescuer , who will be moving backwards (either up or down the stairs) 2. As the chair is tilted back by the rescuer by the head , the rescuer at the foot should grasp the chair by its leg 3. Both rescuers should lift and begin to carry simultaneously.If the chair has wheels , they should not be allowed to touch the steps. 4. As the rescuers descend or ascend with the patient , the spotter should count out the steps and identify upcoming conditions
99
What is a backboard? hint: what are they used for and tell me the types
Backboards can be long or short. They are made of lightweight, plastic or composite materials with molded hand holds. Common styles are the Farrington (rectangular with round corners) and the Ohio (with mitered corners and tapering sides). It is used to protect the patient from rocky ground surfaces, and it could serve as a Spine Motion Restriction device to primarily move the patient until they are removed from backboard and place directly onto the stretcher mattress.
100
What is the vacuum mattress back board substitute? Hint: Why would we use it and list it's benefits
A vacuum mattress is a device that uses vacuum tech to conform to the shape of the patient, eliminating the need to pad any extra voids and it has several benefits such as it being: -lightweight -able to conform to the patient's shape. -able to fit within a basket stretcher -designed with several hand grips for the care providers to grasp when preparing to lift the patient *Can be as both a backboard and a moving device
101
Why would we use the scoop stretcher? hint: this question also states how many pounds the stretcher can handle and I named some disadvantages of it
The scoop or orthopedic stretcher is made to be assembled and disassembled around the patient. it can be used in confined areas where other conventional stretchers will not fit. ( It can also be used for pelvic fractures or bilateral femur , fractures to prevent further injury) *designed for up to 300 pound patients *PLEASE NOTE disadvantages of the scoop stretcher are that some devices are constructed entirely of metal which picks up the temperature of the environment and they not recommended for patients with suspected spinal injury
102
How would you use a scoop stretcher properly? hint: i'm talking about the procedure
First of all, you need access to the patient from all sides and at least two rescuers are required. One to prepare and position the stretcher and one to move the patient. 1. Adjust the stretcher to the length of the patient 2. Separate the stretcher halves, and place one on each side of the patient. Gently roll the patient onto one side and slide half of the stretcher under the patient 3. If you haven't yet, examine the patient's back and return the patient to supine position 4. Assemble the head end of the stretcher 5. Roll the patient's body to the other side. Swing the remaining half of the stretcher into a closed assembled position. Latch the foot end of the stretcher. 6. Pad , the patient's head and any bony prominence with a pillow or folded sheet 7. Secure the patient with at least three body straps
103
What are advantages of the basket stretcher?
Enabling you to completely immobilize a patient who is already on a backboard and to move him over any kind of terrain. The lightweight polyethynol style slides easily and smoothly over snow and rough terrain while protecting the patient from branches and twigs. There are two styles. One style has a welded metal frame fitted with a contoured chicken wire web. The other style has a tubular aluminum frame riveted to a molded polyethylene shell. Either style accommodates a scoop stretcher or Ohio type backboard. Basket stretchers also fit onto wheeled stretchers, which can be used to move the patient but be sure to secure the basket stretcher to the wheeled stretcher prior to any movement.
104
Why Would we use a reeves , flexible stretcher?
-For narrow and restricted hallways, such as those found mobile homes. - a patient on a backboard can be placed inside the flexible stretcher for moves downstairs or rough terrain - at the end of the day , just remember , the reeves flexible stretcher is designed for rapid spine motion restriction in tight spaces *Also known as a Reeves, flexible stretcher. It is a special transfer device made of canvas or synthetic materials with six large lifting and curing handles , three on each side.
105
Describe the mechanisms of ventilation. Inhalation and exhalation.
Inhalation: the diaphragm and the intercostal muscles contract, which in turn increases the size of the thoracic cavity. This is because the diaphragm moves slightly downward and the intercostal muscles contact, pulling the ribs upward and outward. This creates a negative pressure in the chest which draws air in. Exhalation: the diaphragm and the intercostal muscles relax which decreases the size of the thoracic cavity. The diaphragm moves upward and the ribs move downward and inward, creating a positive pressure in the thorax and causing air to flow out of the lungs. Boyles law: as gas increases, pressure decreases and as gas decreases, pressure decreases
106
How much work do the intercostal muscles and the diaphragm put for inhalation percentage wise?
The diaphragm contributes about 60-70% of the effort to breathe when the phrenic nerve tells the diaphragm to contract. This nerve exits the spinal cord between vertebrae C3 and C5. whereas the intercoastal muscles contribute the remaining 30-40%. Thus , a significant injury that prevents the diaphragm from functioning properly will cause the patient's breathing to become ineffective.
107
What happens if a patient suffers a spinal injury between vertebrae C3 and C5?
If a spinal cord injury were to occur between C3 and C5, the phrenic nerve, may be damaged and the diaphragm will not receive a nervous impulse to contract, no longer allowing it to contribute to ventilation. The intercoastal muscles will also not work properly because the nerves that stimulate these muscles exit from the lower thoracic vertebrae. With an injury to the spinal cord high in the cervical vetrebrae the patient would not be able to breath spontaneously and would require artificial ventilation.
108
What is the function of the urinary or renal system?
Filters and excretes waste from the blood (PRIMARY FUNCTION) * it also helps the body maintain its delicate chemical balance (just something else it does. This aids in maintaing a normal acid base balance in the body)
109
What does the urinary or renal system consist of? Its parts
-two kidneys -two ureters -one urinary bladder -one urethra
110
What is the function of the kidneys?
To filter waste from the bloodstream and help control fluid balance. * the kidneys also play an important role in blood pressure regulation and red blood cell production *Waste is removed from the circulating blood for elimination and useful products are returned to the blood
111
What is the function of the ureters?
To carry the waste from the kidneys to the bladder
112
What is the function of the bladder?
To store the urine prior to excretion
113
What is the function of the urethra?
To carry out the urine from the bladder to the outside of the body
114
Describe the process of anaerobic metabolism?
Anaerobic metabolism is when the cells breakdown molecules without the presence of oxygen. Glucose crosses the cell membrane and normal glycolysis occurs with the production of pyruvic acid and the release of a small amount of ATP. Without the availability of oxygen , however , the pyruvic acid is not able to enter the next phase of metabolism and is instead converted to lactic acid. In conclusion , the byproducts of anaerobic metabolism are lactic acid and a small amount of ATP.
115
Why is anaerobic metabolism so dangerous?
the byproducts of anaerobic metabolism are lactic acid and a small amount of ATP. if the acid accumulates, it produces an acidic environment and may disturb its function and stability. High acid levels inactivate enzyme function, disrupt cell membranes and ultimately lead to cell death. In addition the cell has little energy to perform its normal functions. Thus, an inadequate delivery of oxygen and glucose to the cells will result in very little energy production, reduce cellular function and the possibility of cellular damage. NaK+ pump failure too. -acidic cell enviroment due to lactic acid -inadeqate energy production -Sodium-potassium pump failure
116
Describe the sodium potassium pump?
Sodium is a positively charged ion that is found primarily outside the cell (primary extracellular ion) and potassium is a positively charged ion that is considered the primary intracellular ion because it is found primarily on the inside of the cell. For the body cells to perform their special functions , they require an alternating movement of sodium out of the cells and potassium into these cells. Molecules naturally move from an area of greater concentration to an area of lesser concentration and hence why sodium wants to move into the cell and potassium wants to move out of the cell but the sodium potassium pump works against the concentration gradient to push sodium out of the cell and potassium then is able to replace the recently pushed out sodium in the cell, the process described requires energy. 3 sodiums per 2 potassiums. The sodium potassium pump will fail if there's not enough energy , and this will allow the sodium to collect inside the cells, attracting water with it, making the cell swell and eventually undergo apoptosis. Cell death.
117
What is minute ventilation? (Provide the formula on how to find it too)
Minute ventilation, also known as minute volume, is the amount of air moved in and out of the lungs in one minute. You find it by multiplying the tidal volume (volume of air breathed in with each individual breath) by the frequency of ventilation in one minute. *An average sized adult has a tidal volume of 500 mL and an average respiratory rate of 12 BPM Thus, the calculated minute ventilation would be 500 x 12 = 6000 mL or 6L per min *It's important to under how to calculate minute ventilation because - a decrease in tidal volume decreases the minute ventilation - a decrease in the frequency of ventilation decreases the minute ventilation - a decrease in minute ventilation reduces the amount of air available for gas exchange in the aveoli - a decrease in minute ventilation can lead to cellular hypoxia - to ensure adequate ventilation the patient must have both an adequate tidal volume and an adequate rate of ventilation
118
A patient may increase frequency of ventilation to compensate for a decrease in tidal volume to maintain an average minute ventilation. Why is low tidal volume dangerous even if they do compensate with a higher ventilatory rate, bringing them to an average minute ventilation?
Dead air space. For example, a patient breathing 200 mL of tidal volume but compensating by breathing 28 BPM has a minute ventilation of 5600 mL or 5.6 L / per minute which seems okay but dead air space prevents an adequate amount of air from reaching the aveoli for gas exchange. We don't NEED TO KNOW THIS BUT the formula for alveolar ventilation is ( tidal volume - dead air space) x frequency of ventilations per minute. Dead air space will always be approximately 150 mL
119
What are chemoreceptors and tell me the two types?
Chemoreceptors are specialized receptors that monitor the pH, carbon dioxide and oxygen levels in arterial blood. We have central and peripheral. *The central chemo receptors are located near the respiratory center in the medulla *The peripheral chemoreceptors are located In the aortic arch and the carotid bodies in the neck
120
What are the central chemo receptors most sensitive to?
Carbon dioxide and changes in the pH of the cerebrospinal fluid
121
How is carbonic acid formed?
The carbon dioxide can cross over the blood brain barrier and into the CSF to mix with H20 to from carbonic acid and thus this shows that the pH in the CSF is a direct reflection of the carbon dioxide level of the arterial blood. The relationship is summarized as follows: The greater the amount of carbon dioxide in the blood , the greater the amount of acid The lesser the amount of carbon dioxide in the blood , the lesser amount the of acid
122
How can you summarize the response of ventilation to stimulation by the central chemoreceptors from changes in carbon dioxide? (CO2)
An increase in arterial carbon dioxide increases the number of hydrogen ions in the cerebrospinal fluid stimulating an increase in the rate and depth of respiration to blow off more carbon dioxide A decrease in arterial carbon dioxide decreases the number of hydrogen ions in the cerbrospinal fluid , causing a decrease in the rate in depth of respiration to blow off less carbon dioxide
123
What are the peripheral chemoreceptors sensitive to?
They are still somewhat sensitive to carbon dioxide and pH BUT ARE MAINLY MOST sensitive to the level of oxygen in arterial blood.
124
How can you summarize the activity of the peripheral chemoreceptors?
A Significant decrease in arterial oxygen content causes an increase in the rate and depth of respiration to increase the content of oxygen in the blood * stimulation by the central chemoreceptors and the peripheral chemoreceptors together has a greater influence on the rate and depth of ventilation than stimulation from either one by itself
125
Describe hypoxic drive?
Normally , a person's rate and depth of breathing are regulated primarily by the amount of carbon dioxide in the blood. This is known as hypercapnic or hypercabic drive but for patients with COPD they retain carbon dioxide in arterial blood as a result of their poor gas exchange. This leads to the central chemoreceptors becoming insensitive to the small changes that typically stimulate ventilation. So now the peripheral chemoreceptors then become the primary stimulus for ventilation. Instead of a small increase in carbon dioxide level being a strong stimulus for ventilation , the peripheral chemoreceptors rely on a decrease in the oxygen level to stimulate ventilation. You need hypoxia as the stimulus.
126
What is hydrostatic pressure?
The force inside the vessel or capillary bed generated by the contraction of the heart and the blood pressure. Hydrostatic pressure exerts a push inside the vessel or capillary. It wants to push fluid out of the vessel or capillary, through the vessel wall and into the interstitial space. A high hydrostatic pressure would force more fluid out of the vessel or capillary and promote edema, due to excessive fluid outside the vessels.
127
Describe how pulmonary edema happens?
Your left ventricle is failing and unable to pump lead effectively. The volume and pressure in the left atrium , pulmonary vein and pulmonary capillaries rise. Due to the blood backing up into the left atrium and pulmonary vessels , the increased hydrostatic pressure inside the pulmonary capillaries forces fluid out of them. The fluid starts to collect in the spaces between the aveoli and capillaries which reduces gas exchange effectiveness. Reducing blood oxygen content leading to cellular hypoxia , and causing the blood to retain carbon dioxide. The fluid eventually begins to collapse and fill aveoli, which is pulmonary edema.
128
Define stroke volume? Hint: tell me how you determine it
The volume of blood ejected by left ventricle with each contraction Preload, myocardial contractility and after load
129
Define preload
The pressure generated in the left ventricle at the end of diastole ( the resting phase of the cardiac cycle when the heart is full) preload pressure is created by the blood volume in the left ventricle at the end of the diastole.
130
What is frank starling's law of the heart
As blood fills the left ventricle , the muscle fibers stretch to house the blood , the stretch of the muscle fiber at the end of diastole determines the force available to eject the blood from the ventricle. As the blood volume increases in the left ventricle , the increased stretch in the muscle fibers generates a relative contraction force. In short , the volume of blood in the ventricle automatically generates a contraction force powerful enough to inject it. There is , however , a limit to the applicability of frank starling's law. In the case of a severely dilated ventricle , where the fibers are overstretched , the heart will no longer be able to produce contractions strong enough to eject blood from the ventricle adequately
131
Define afterload
The resistance in the aorta , that must be overcome by contraction of the left ventricle to eject the blood. The force generated by the left ventricle must overcome the pressure in the aorta to move the blood forward. A high afterload places an increased workload on the left ventricle which can lead to eventual less ventricular failure. * in general , a decrease in either the heart rate or stroke volume will decrease the cardiac output
132
What are the effects of heart rate , blood volume, myocardial contractility , autonomic nervous system stimulation, hormone release and diastole blood pressure on cardiac output?
- a decrease in heart rate decreases cardiac output - an increase in heart rate if not excessive increases cardiac output - a decrease in blood volume decreases preload, stroke volume, and cardiac output - an increase in blood volume increases preload, stroke volume, and cardiac output - a decrease in myocardial contractility , decreases stroke volume and cardiac output - an increase in myocardial contractility increases stroke volume and cardiac output - neural stimulation from the sympathetic nervous system increases heart rate , myocardial contractility and cardiac output - neural stimulation from the parasympathetic nervous system decreases heart rate myocardial contractility and cardiac output - beta one stimulation from epinephrine increases heart rate, myocardial contractility and cardiac output - beta one blockade blocks beta one stimulation , which decreases heart rate , decreases myocardial contractility and decreases cardiac output - an extremely high diastolic blood pressure increases the pressure in the aorta, requiring a more forceful contraction to overcome the aortic pressure and a higher myocardial workload.And may weaken the heart and decrease the cardiac output over time - a reduction in the dystolic blood pressure decreases the pressure in the aorta which requires a less forceful contraction to overcome the aortic pressure and reduces the myocardial workload , which may improve the cardiac output in a weakened heart * also, note that a faster heart rate may increase cardiac output.However, if the rate is extremely fast, the cardiac output may actually decrease.Because the time between beats is so short.There is not enough time for the ventricles to fill. In turn , this reduces the preload and cardiac output. (Normally when HR is greater than 160 BPM)
133
How do you determine blood pressure? The formula
Cardiac output and systemic vascular resistance Cardiac output x systemic vascular resistance = BP
134
Summarize the effects both cardiac output and systemic vascular resistance has on blood pressure?
- an increase in cardiac output increases the blood pressure - a decrease in cardiac output decreases the blood pressure - an increase in the heart rate increases the cardiac output , which in turn increases the blood pressure - a decrease in the heart rate decreases the cardiac output , which in turn decreases the blood pressure - a increase in stroke volume increases cardiac output , which in turn increases the blood pressure - a decrease in the stroke volume decreases the cardiac output , which in turn decreases the blood pressure - an increase , in systemic vascular resistance increases the blood pressure - a decrease in systemic vascular resistance decreases the blood pressure
135
What is the general effect of blood pressure in relation to perfusion?
-An increase in blood pressure increases cellular profusion - a decrease in blood pressure decreases cellular perfusion
136
What are baroreceptors?
Baroreceptors are stretch sensitive receptors located in the aortic arch and carotid sinuses. As the pressure inside the vessel's change , it decreases or increases stretch of the fibers of the baroreceptors. They detect changes in the blood pressure. Having detected the change in blood pressure , the baroreceptors send impulses to the cardio regulatory sensor in the medulla of the brainstem , to make compensatory altercations in the blood pressure
137
What does the cardio regulatory center consist of?
Cardioexcitatory center and cardioinhibitory *These centers control heart rate and stroke volume
138
Summarize the baroreceptors response to an increase in blood pressure?
An increase in blood pressure leads to an increase in baroreceptor stretch , which leads to an increase in impulses sent to the medulla , which leads to an increase in parasympathetic nervous system which leads to decrease in sympathetic nervous system , which leads to a decrease in heart rate , which leads to decreasing contractility , which leads to decrease in blood pressure
139
Summarize the baroreceptors response to a decrease in blood pressure?
A decrease in blood pressure leads to decrease in baroreceptor stretch which leads to a decrease in impulses sent to the medulla , which leads to a decrease in the parasympathetic nervous system which leads to an increase in sympathetic nervous system , which leads to an increase in heart rate , which leads to increase in contractility , which leads to increase in blood pressure
140
If the drop in blood pressure is significant , the medulla in the brain stem sends nerve impulses to the adrenal gland, how does this help?
Stimulation of the adrenal medulla results in the secretion of the hormones , epinephrine and norepinephrine. Epinephrine stimulates alpha1 and alpha2 receptors, producing vasoconstriction , which increases systemic vascular resistance and blood pressure. Epinephrine also stimulates Beta1 receptors in the heart, leading to an increase in heart rate and myocardial contractility. This Raises the stroke volume and cardiac output and subsequently raises the blood pressure. norepinephrine predominantly stimulates alpha1 and alpha2 receptors. Alpha 1- vasoconstriction Alpha 2- controls alpha 1 Beta 1- increases HR Beta 2- bronchodilation
141
Describe physiological changes in an infant such as weight and teeth development? (hint: I'm looking for numbers)
The neonate typically weighs 3.0-3.5kg and the head accounts for 25% of the weight. The initial birth weight of neonate normally drops 5-10% in the first 2 weeks but the lost weight is normally regained shortly thereafter. The baby's weight will continue to increase throughout infancy with proper nutrition such as breast milk or formula. As this first year progresses, the infant will consume other soft foods without yet having teeth but during infancy , the primary teeth will begin to emerge , and the baby will slowly be introduced to solid food. *infancy is marked from 1 month to 1 year
142
What changes does the baby's respiratory system undergo during infancy?
-An infant's airways are shorter , narrower , less stable , and more easily obstructed than those of adult. -Until 4 weeks of age , infants are primarily nose breathers. they have fewer alveoli with decreased collateral ventilation. -Thier lung tissue is also fragile and prone to trauma from pressure. -Infants also have immature accessory muscles, which makes them easily susceptible to early fatigue from labored breathing. - the infant's less rigid chest wall and more horizontalally placed ribs , promote diaphramatic breathing (belly breathing) - if an infant's respiratory rate is rapid , it could lead to rapid heat and fluid loss
143
How is the infant's immune system immature?
- most of the neonates , immunity is based on the antibodies that he received through the placenta from his mother during pregnancy ( this is called passive immunity and is normally retained through the first 6 months of life) - infants are more susceptible to infections and disease , so it is important to immunize them (vaccination) *breastfeed babies will have immunity for as long as the breastfeeding continues because they are rechieving antibodies from mom
144
What are some reflexes infants have?
Blinking, startling, rooting sucking , swallowing, stepping, gagging, and grasping. These reflexes help them survive, such as their strong coordinated sucking and gag reflexes.
145
What is the fontanelle?
Babies are born with fontanelles, or soft spots on the skull that allow the head to be compressed and passed through the birth canal during delivery. * The fontenelle's allow room for rapid expansion and growth of the brain during infancy. *The posterior fontanelle closes by 3 months and the anterior fontanelle closes between 9-18 months
146
How may the Fontenelle provide EMTs indirect estimate of hydration or infection/injury?
If the child is dehydrated, the fontenelle's may appear to pressed or sunken in relation to the rest of the skull. The frontelle may appear full or raised if the infant has an infection or injury , causing an increase in intercranial pressure.
147
By 2 months, what should an infant be able to do?
- track objects with his eyes - focus on objects 8-12 inches away - recognize familiar faces - display primary emotions and facial expressions - hear and recognize some familiar sounds and voices - move in response to stimuli
148
By 6 months, what should an infant be able to do?
- sit upright in a high chair - make one syllable sounds (ma, mu, da, di) - raise and support their upper body when they are on their stomach - grasp and shake hand toys - push down on his legs and feet when held over a firm surface - follow moving objects with their eyes - recognize familiar objects at a distance - begin to babble and try to imitate familiar sounds
149
By 12 months, an infant should be able to do what?
- walk with help - know their own name - sit without assistance - crawl and creep on their hands and knees - put objects into containers - poke objects with fingers - response to simple requests and "no" - say mama or Dada - imitate some words, gestures and facial expressions - begin to use objects like brushes , cups or phones correctly - finger feed themselves
150
What are the vital signs for early adulthood? Hr, respiratory rate, bp, temp
Heart rate: Average is 70 BPM Respiratory rate: 12-20 BPM Blood pressure: 120/80 mmhg Temperature: 98.6⁰F *Early adulthood is when a person is 20-40 years old
151
Why are accidents the leading cause of death between 19-26 year olds?
Most people reach peak physical condition , and this leads to the capability at risky activity. However, once young adults reached their peak, their physical condition.Because slow down , they start gaining weight , storing fat, experiencing decreased muscle tone, and their spinal disks settle.
152
What are some psychosocial changes that occur with early adulthood?
People generally take on more responsibility and become more independent. - some choose to leave their parents home and start their own - most people develop romantic and affectionate relationships and some may even marry and have children (childbirth is most common in this group) - it is also the time that many adults finish school and find a career ( they experience the highest levels of job stress during this period) - even with all these changes, early adults are more capable of coping with their stress than when they were younger
153
Why does oxygenation happen?
Because of internal respiration and external respiration , the processes in which fresh oxygen replaces waste carbon dioxide. This is a gas exchange that takes place between the alveoli and the capillaries in the lungs (external), and between the capillaries and the cells throughout the body (internal). As noted earlier, ventilation is the mechanical process of moving air in and out of the lungs and respiration is the psychological process of gas exchange. *Oxygenation is the process of the cells becoming perfused with oxygen
154
Why does hypoxemia occur?
It typically occurs due to ventilation perfusion mismatch. This is when there is a lack of available oxygenated air in the alveoli even though perfusion (blood flow) to the alveoli is adequate, or when the alveoli are adequately oxygenated but perfusion to the alveoli is poor or when there is combination of both poor ventilation and poor perfusion. Hypoxemia is low oxygen content in arterial blood.
155
Listen some reasons why hypoxia may occur?
- occulated airway - inadequate breathing - an inadequate delivery of oxygen to the cells by the blood (hypoperfusion or shock) - inhalation of toxic gases (carbon monoxide) - lung and airway diseases ( asthma and emphysema) - drug overdose that suppresses the respiratory center in the brain ( morphine, heroin and other narcotics) - stroke - injury to the chest or respiratory structures - head injury -etc many more that can create a blockage to the airway , or produce inadequate breathing by depressing the respiratory centers in the brain, interfering with gas exchange at the level of the alveoli or restricting the movement of the chess wall *hypoxia is an inadequate amount of oxygen being delivered to the cells.
156
What are some signs of mild to moderate hypoxia?
- Tachypnea - Dyspnea - Pale, cool, clammy skin (early sign) - Tachycardia - Increased Blood Pressure - restlessness and agitation (from hypoxic cells) - disorientation and confusion (from high CO2 levels in the blood) - headache
157
What are some signs of severe hypoxia?
- Tachypnea - Dyspnea - Cyanosis ( bluish gray color that may be found in and around several areas of the body. Including the lips , mouth , nose , fingernail beds , conjunctiva (between bottom of eyelid and eyeball, normally red), oral mucosa (between the lips, and gums, and tongue). Cyanosis has a blue like color affecting skin, mucous membrane, and nail beds. - Tachycardia that may lead to dysrhythmias and eventual bradycardia - severe confusion - loss of coordination - slow reaction time - AMS - Seizure
158
Typically , when there's impairment to the movement of oxygen , there's also impairment of the movement carbon dioxide. This leads to carbon dioxide buildup , known as hypercarbia, what are two signs of hypercarbia that typically appear with hypoxemia or hypoxia?
- sleepy appearance ( from high carbon dioxide levels in the brain) - head bobbing ( head bobs upward with inhalation and downward with exhalation) with droopy eyelids (from high CO2 in the brain)
159
Why should we consider bradycardia a early sign of hypoxia in infants?
Infants and young children normally have higher heart rates than adults. A normal heart rate for a week old is 100-180. So a heart rate of 80 is very slow for an infant and hypoxia is the primary cause of bradycardia in this group. In infants, children and adults , bradycardia is a sign of severe hypoxia and impending respiratory and cardiac arrest.
160
When should you begin positive pressure ventilation?
When the patient's breathing status is inadequate either rate or tidal volume. This forces air into the patient's lungs, aka helps them be ventilated.
161
List some ways in which a disruption in the mechanical process of pulmonary ventilation may occur?
- interruption of the nervous system's control and stimulation of the diaphragm or the external intercoastal muscles may result from a brain injury, drugs that depress the central nervous system or from neuromuscular diseases - structural damage to the thorax may interfere with the action of the chest. This impedes the ability of the thorax to generate pressure changes necessary to draw air into the lungs for inhalation and to allow air flow out of the lungs during exhalation. pain associated with chest injury: frail chest (2 or more ribs fractured in 2 or more places), rupture or injury to the diaphragm or compression of the chess wall can reduce actions of the chest - increased airway resistance reduces air flow through the respiratory track and reduces the amount of air in the alveoli. This makes less oxygen available for gas exchange. An increase in airway resistance can occur from bronchoconstruction or from inflammation inside the vessel - disruption of airway patency can occur from swelling caused by infection, allergic reaction, burns from trauma, from foreign body obstruction , or from loss of muscle tone associated with an alternative status or unresponsiveness. Reduction or loss of airway patency reduces the tidal volume, minute ventilation alveolar ventilation, and volume of gas in the lungs for gas exchange - a neuromuscular disease may affect the muscles of the respiration , leading to a progressive ineffective action of the chest without effective action necessary intrathoracic experiences , respiratory distress will occur and eventually failure
162
True or false, various conditions can disrupt the mechanical process of pulmonary ventilation such as reduction of ambient air content, pneumonia, pulmonary edema, and drowing (all causing fluid to leak into the alveoli), emphysema (distorts alveoli), cyanide, carbon monoxide, pulmonary embolism, tension pneumothorax, heart failure, cardiac temponade, anemia, and hypovolemia.
True. These conditions make it harder for the patient to breathe, and he must work harder to breathe, which demands more energy and he becomes more hypoxic.
163
For the pediatric population , how are their mouth and nose different?
-The noses and mouths of infants and children are smaller than those of adults.Thus, they are more easily obstructed by foreign bodies, swelling, blood, mucus and secretions. -Infants are nose breathers, meaning they want to breathe through their nose and not the mouth.Thus , it is especially important to keep the nose clear of obstructions
164
For the pediatric population , how is their phraynx different?
-Because the tongue of an infant or child is relatively large in proportion to the size of the mouth, it takes a more room, therefore, an infant or a child is more prone to airway obstruction by posterior displacement at the tongue at the level of the phraynx -The epiglottis is more U-shaped and can protrude into the pharynx contributing to obstruction.
165
For the pediatric patient, how is their trachea and lower airway different?
The trachea and lower airway passages of infants and children are more narrow, softer and more flexible than those of adults. Thus, airway obstructions occur more easily from mucus, puss, blood secretions, swelling, constriction and kinking of the trachea, with flexion or extension very small reductions in the diameter of the lower airway results in significant airway obstruction and high resistance to airflow, reducing effective breathing and oxygenation. - the young child's head is larger in proportion to his body, the head tends to forward, flexing the neck and potentially collapsing the trachea , when the child is placed on his back for oxygenation or ventilation for all children , adjust padding to achieving a neutral alignment
166
In the pediatric population, how's their chest wall and diaphragm different?
- the Chest wall in an infant or a child, is softer and more pliable than an adult. This leads to a much greater compliance (elasticity) or movement, during ventilation. Because the chest expands so easily, it is much easier for the EMT to overtinflate the lungs and causs possible lung injury , especially because a much lower tidal volumes is required in children. Overdistention of the alveoli is one of the primary causes for aveolar injury during positive pressure ventilation. -infants and children rely more on the diaphragm for breathing. The intercostal muscles contrbute less in normal breathing and act more like accessory muscles. This is why retractions are more prominent in infants and young children compared to adults. -When you perform ventilation on an infant or child, the chest should expand and rise easily. If the chest does not rise, you should assume that the airway is not adequately open or is occluded by an obstruction or the ventilation volume is inadequate.
167
In the pediatric population , how are their oxygen reserves different?
-Infants and children are smaller and have more limited oxygen reserves than adults.Therefore , they have less oxygen in the lungs available during periods of inadequate breathing or apena. - They have twice the metabolic rate of adults , causing them to use oxygen at a much faster rate - Thier smaller oxygen reserves and greater metabolic rate cause infants and children to become hypoxic more rapidly than adult patients *Hypoxia is the most common cause of cardiac arrests in children.
168
How does the snoring sound occur and how do you relieve it?
When the upper airway is partially obstructed by the tongue or by relaxed tissues in the pharynx. It can be corrected by performing the head tilt chin lift maneuver.This lifts the base of the tongue from the back of the pharynx. Never ever ever use head tilt chin lift on a suspected spinal injury patient.
169
How does the crowing sound occur?
When the muscles around the larynx spasm and narrow the opening into the trachea. Air rushing through the restricted passage causes the sound.
170
How does the gurgling sound occur and how do you relieve it?
When there is presence of blood, vomitus , secretions or other liquid in the airway. *suction to relieve gurgling
171
How does crowing sound like?
Like a bird cawing
172
How does the stridor sound occur and how does it sound like?
Do to a significant upper airway obstruction from swelling in the larynx. It may also be heard if a mechanical obstruction by food or other objects is present. It sounds like a harsh high pitch sound heard during inspiration.
173
When using either a NPA or an OPA, you should always keep what in mind?
- the adjunct must be clean and clear of obstructions - the proper size airway adjunct must be selected to avoid complications and ineffectiveness - the airway adjusts do not protect the airway from aspiration of secretions , blood vomitus, or other foreign substances into the lungs - the mental status of the patient will determine whether an adjunct can be used.The patient's mental status must be continually and carefully monitored.If the patient becomes responsive or gags , remove the airway adjunct. - a head tilt chin lift or jaw-thrust maneuver must still be maintained even when an airway adjunct is in place and properly positioned
174
What is the OPA and what are the two types?
The oropharyngeal airway is a semi-circular device of hard plastic or rubber that holds the tongue away from the back of the airway. One OPA is tubular and the other has a channeled side. Both are disposable and come in a variety of sizes.
175
What criteria must a patient fulfill before using an OPA?
The patient must be completely unresponsive and have no gag or cough reflex. If inserted in such a patient , it may cause vomiting or spasm of the vocal cords which further compromises the airway.
176
How do you insert an OPA?
1. Select the properly sized airway adjunct by measuring it from the front teeth to the angle of the jaw or from the corner of the month to the tragus of the ear. 2. Open the patient's mouth using the cross finger technique. An adults insert the airway upside down, the tip pointing to the roof of the mouth 3. When the airway contacts the soft palate at the back of the roof of the mouth gently rotate it 180⁰ while continuing to advance it until the flat flange at the top of the airway rests on the patient's front teeth. Following this procedure reduces the chances of the tongue being pushed back and obstructing the airway. The airway can also be inserted sideways in the corner of the mouth and rotated 90⁰ while being pushed into position.
177
What is the alternative method to inserting a OPA?
With the use of a tongue depressor. The tongue depressor is inserted into the mouth until its tip is at the base of the tongue.The tongue is then pressed down toward the mandible and forward with the tongue depressor. The airway is inserted in its normal anatomical position until the flange is seated on the teeth. This is the peferred method of airway insertion in infants and children
178
What is the NPA?
The nasopharyngeal airway is a curved hollow tube , a soft plastic or rubber with a flange or flare at the top end and bevel at the distal end. The airway adjunct comes in a variety of size based on a diameter of the tube.
179
When would we use an NPA?
When the oral airway cannot be inserted because of -clenched teeth -biting -Injuries to the maxilla or face -in those patients who are unable to tolerate an OPA BUT! we would not use an NPA If the patient has suspected fracture to the base of the skull or severe facial trauma
180
Is it true that when using a NPA, you cannot stimulate the gag reflex?
False. It can still cause gagging, vomiting , spasms of the vocal cords and like the OPA, it does not protect the trachea and lungs from aspiration of blood, vomitus, secretions or other foreign substances.
181
Is insertion of a NPA painless?
Although the tube is lubricated, insertion is painful and may cause injury to the nasal mucosa, causing a nose to bleed and allowing blood to enter the airway.Resulting in possible obstruction or aspiration, it is still necessary to maintain a head tilt chin lift or jaw-thrust maneuver when the airways inserted.
182
How do you insert an NPA?
1. Measure it from the tip of the patient's nose to the tip of the earlobe. It is also acceptable to measure the airway from the tip of the nose to the angle of the jaw. The diameter of the airway must be such that it can fit inside the patient's nostril without blanching (turning white due to obstruction) the skin of the nose. 2. Lubricate the outside of the airway well with the sterile WATER SOLUBLE LUBRICANT , this eases the insertion and lessons to chance a trauma to the nasal mucous lining 3. Inserted the device in the larger or more open nostril, the bevel should be facing the septum or floor of the nostril. The devices is inserted close to the midline along the floor of the nostril and straight back into the nasopharynx, if you meet resistance, rotate the device gently from side to side, as you continue to insert it, If you still meet resistance, remove the airway and try the other nostril. When the device is properly inserted, the flange should lie against the flare of the nose. 4. Check to make sure that air is flowing through the airway during inhalation exhalation, if the patient is spontaneously breathing and no air movement is felt through the tube remove it and attempt reinsertion in the other nostril.
183
What are some complications that come with the use of an NPA with young childern?
In very young patients , their nasopharyngeal airway is so small that it is easily obstructed by secretions and other upper airway substances and children may have larger adenoids (clot of tissue in the back of the nose) which makes insertion of the NPA difficult. Even if insertion is possible , the large adenoids can compress the nasopharyngeal airway and increase the resistance in the airway, along with bleeding and injury to the nose. This makes the use of an NPA device very ineffective in childern.
184
What are the vital signs we are meant to measure?
-Respiration -Pulse -Skin -Pupils -Blood pressure -Pulse oximetry (SPO2) *Additional vital signs we may measure -Capnography (end-tidal CO2 if protocol permits) -Blood glucose -Pain assessment -Body temperature *Baseline vitals are the first set of vitals you take to compare with later vitals *In an unstable patient, reassess every 5 minutes *In an stable patient, reassess every 15 minutes
185
What equipment should you carry in order to asses vital signs?
-A sphygmomanometer (blood pressure cuff) in adult and pediatric sizes -A stethoscope to take BP and and listen to lung sounds -A wristwatch to time pulse and respiratory rate -A penlight to examine pupils -A pair of shears to cut clothing away -A pen and notebook to record info -PPE equipment such as eyewear, gloves, and masks -A pulse oximeter to assess SPO2 -A 12-lead cardiac monitor to accquire a 12-lead ECG tracing -End tidal CO2 if protocol permits -A glucometer to measure BGL -A pain scale tool -Thermometer to measure core body temperature
186
What vitals must be assessed for respiration?
-Respiratory rate -Respiratory quality -Respiratory rhythm
187
Which respiratory rates are typically concerning?
When they are under 8 or over 24 *RR is typically determined by counting the breaths in a 30-second period and multiplying by 2. (One breath = one inhalation + one exhalation) *We also pretend to check to check radial pulse when assessing RR because if the patient knows you are counting/assessing the respiratory rates, it can influence the rate. Hence, pretend to check the radial pulse and cross the patient's arm over the lower chest while counting respirations.
188
When assessing an patient's respiratory rate, what are the two steps/actions you should take.
1. Determine if the patient seems to be in respiratory distress 2. Assess his mental status and pay attention to his speech pattern For example, a patient breathing 8 breaths per minute who is alert, orientated, and able to answer your questions without gasping for breath or showing a struggle to breath, 8 may be his normal respiratory rhythm and no intervention is needed; whereas a patient who is struggling may require assistance/ventilation. Base your determination of the patient's condition and not if they fall into normal ranges because normal is different for everyone, for example a patient breathing 15 per minute may in fact be in respiratory distress if clinical signs show that is the case.
189
What should we keep in mind when considering respiratory rate in elderly population?
The resting respiratory rate in the elderly population is typically higher, with an average of 20-24 resting BPM and elderly patients may have a decreased tidal volume. For example, a resting rate of 23 may be alarming in an 18 year old patient but not a 67 year old patient.
190
Any adult patient breathing at a rate greater than 40 per minute or an infant or a child breathing at a rate greater than 60 should rechieve assistanted ventilation for which two reasons?
1. The patient will not be able to sustain that rate for a long because of the increase in workload to breathe and the respiratory muscle fatigue that will follow 2. The rate is so fast that the lungs don't adeqaute time to properly fill, leading to a drastic reduction in tidal volume
191
What does the determination of respiratory quality tell you?
-the volume of air moving in and out of the lungs with each breath (tidal volume) -the volume per minute (minute ventilation) -and how well the air is moving
192
If either the respiratory rate or the tidal volume is found to be inadequate and the patient's respiratory status isn't adequate one what must be initiated?
Positive Pressure Ventilation (PPV)
193
The quality of breathing may be normal or abnormal, what do each usually correlate to when regarding tidal volume?
A normal quality correlates with an adequate tidal volume and a abnormal quality is usually a indication of an inadequate tidal volume. An abnormal quality may be shallow, labored, or noisy.
194
Describe the characteristics of normal respiration?
- average chest wall movement, which is at least 1 inch of expanison - the patient does not use the accessory muscles of the chest , neck or abdomen while breathing - rate is normal (12-20, varies by age) and inhalations are neither prolonged nor excessively short - exhalation is typically twice as long as inhalation - normal breathing is quiet
195
Describe the characteristics of shallow respiration?
- slight chest or abdominal wall expansion upon in inhalation (typically indicates inadequate tidal volume and requires PPV by BVM or CPAP depending on the patient's conditonn and assessment findings)
196
Describe the characteristics of labored respiration?
- the patients is working hard to breathe - abnormal sound breathing that may include grunting or stridor (a harsh high pitched sound) - the use of accessory muscles in the neck , chest or abdomen to breath - nasal flaring - sometimes gasping - in infants and children , there may be retraction of the skin muscles and other tissues around the clavicle and between the ribs
197
What does the use of accessory muscle in the neck and chest usually indicate? What does excessive abdominal muscle use indicate?
the use of accessory muscles in the neck and chest usually indicate that the patient's struggling to inhale, whereas excessive abdominal muscle use is usually an indication of trouble exhaling. ** the use of accessory muscles requires an increase of energy expended to breathe which may cause fatigue
198
What sounds does noisy respiration include?
-snoring -wheezing -gurgling -crowing -stridor
199
With noisy respiration , what action should you perform during your assessment? What difference is it between trauma and medical patients?
Auscultate the chest with a stethoscope to determine if breath sounds are present on both sides and to identify any noisy breath sounds not audible to the ear alone. In a trauma patient, you auscultate primarily to determine whether breath sounds are present or absent, whereas in the medical patient, you should focus on abnormal breath sounds. This may include wheezing, rhonchi, and crackles (rales)
200
What is respiratory rhythm?
The regularity or irregularity of respirations
201
Which factors influence respiratory rhythm?
This can be easily influenced by speech, activity , emotions and other factors in the conscious and alert patient. However, abnormal respiratory rhythm in an patient presenting with AMS is a serious concern. It may indicate a medical illness, chemical imbalance, or brain injury.
202
List abnormal respiratory patterns?
- cheyne stokes - biot - apneustic - ataxic - agonal - kussmaul - central nuerogenic hyperventilation
203
Describe cheyene stokes breathing?
The respiratory rate and tidal volume gradually increase and gradually decrease , followed by a period of apena for up to 10 seconds. Pattern repeats.
204
Describe biot breathing?
Similar to cheyene stokes except that the tidal volume doesn't change
205
Describe apneustic breathing?
Prolonged periods of inhalation
206
Describe ataxic breathing
An irregularly inregular pattern of rate and tidal volume
207
Describe agonal breathing?
Long periods of apena with a gasping breath interposed
208
Describe kussmaul breathing?
A rapid respiratory rate with a deep and labored tidal volume
209
Describe neurogenic hyperventilation?
A sustained deep and rapid respiratory rate of at least 25 breaths per minute but with a regular pattern.
210
In which confined spaces must an EMT be extremely catious?
-Caves -Wells -Tankers -Vats -Manholes -Sewers -Culverts -Underground utility vaults -Silos -Closed garages -etc
211
Why are confined spaces so dangerous?
Such areas may be low in oxygen and or high in toxic substances such as methane
212
What PPE should you ensure you have before entering confined spaces?
Appropriate Self-Contained Breathing Apparatus (SBCA) in place. PLEASE ENSURE YOU HAVE SCBA ON. many well meaning rescuers have failed to recognize the risk of confined space entry and have themselves become victims along with the patient's they planned to rescue.
213
If we arrived to a scene of a crime, what should we wait on before we enter?
Your safety is always the #1 priority so you must wait for the police to arrive so that they can secure the scene, only then will you be allowed to enter. Even if you only suspect It is a crime or a threat, do not enter the scene and wait for police backup.
214
When arriving at a scene with a known or suspected crime scene, what actions should you take?
- while still several blocks away, turn off the siren and emergency lights (draws less attention and allows you to survey the scene, if the scene seems too dangerous, do not stop and simply pass it. Await police support) -practice parking 2-3 houses away (so you can study the scene. In crimes involcing guns, this will typically put you outside the killing zone)
215
What is the killing zone?
The area controlled by hostile fire. If someone inside the house has a gun , an area about 120⁰ in front of the house is at least partially exposed to hostile fire.This area can be much larger depending on the location of the house.For example , one on the corner lot and on the mobility of the person with the gun , the killing zone is not static and is always subject to change
216
If a crowd has gathered before your arrival at a crime scene, how should you study it?
-study the mood of the crowd. If it is choatic, don't let yourself to be pulled in. If it is hysterical, again, don't be pulled in. If it is hostile to your presence, you can either take the patient with you and leave or await police support.
217
When approaching a scene with a known or suspected crime scene, what actions should you take?
- walk on the grass for a quieter , less obvious approach - if you are using a flashlight, hold it beside you, not in front of your body , so that you don't make your body a possible target - if you're walking with a partner, walk single file, the last person in the line should carry the jump kit. This will leave the person at the front of the line hands free , and better able to react to any problems they may be encountered - only the person in line should carry a flashlight because all those behind would only illuminate the front - make a mental map of possible places of concealment and cover such as trees that will both hide you and stop bullets. Keep illuminating or scanning dark corners for movement - take a moment to look at windows and corners. If you need to take a longer look , change positions to make it harder for a hostile person to focus on you/ find you - stand to the side of the door when you knock on it.Never in front of it to avoid being a target for someone shooting , springing out or reaching to grab at you. Standing to the knob side , prevents a door that opens outward from blocking you. If the door opens inward , the person opening it will most likely be looking toward the hinge side, letting you see them before they see you. - as soon as the doors open, assess the situation before you decide whether to retreat or to have your partner move the ambulance up to the front of the building. as you enter, leave doors open behind you to ensure an escape route. Likewise , never appear to block the patient's route of escape
218
When at the patient's side at a known or suspected crime scene, what actions should you take?
-if you discover it is indeed a crime, be wary that the perpetrator may be nearby. Police intervention will be necessary and always be ready to retreat. - once the scene is secured, limit the number of responders at a possible crime scene to only what's necessary - do not allow bystanders to touch or disturb the patient or his surroundings - introduce yourself to the patient carefully and say that you're there to help him. Crime patients are often confused and afraid - be alert to the possibility that the patient at the crime scene be a perpetrator. always keep track of the patient's hands in a hostile situation and be prepared for the possibility at such a patient may suddenly reach for a weapon - if possible, have one EMT keep a constant watch on the bystanders and the surrounding area while you work on the patient to alert you if a scene begins to turn dangerous - your first priority is yourself and your partner. Your second is your patients care but also be mindful of police requests. - take extreme care not to disturb any evidence not on the patient's body (broken glass, foot steps, soil, tire tracks, etc) - never touch or move suspected weapons unless it is necessary for treating the patient's injuries. Many guns are loaded and dangerous due to accidental discharge. Pick up a gun by the edge of the grip and use a gauze pad to pick up a knife at the very edge of the blade to not distribute any fingerprints. - wear gloves the whole time to avoid leaving fingerprints - if you need to tear or cut away clothing to expose a wound, make sure you do not cut through a bullet hole or a knife slash in the clothing , keep the clothing and submit it as evidence to the police - if the patient was strangled or tied with a rope or other material cut at a point away from the knot instead of untying it because the knot can help identify killers - if the patient is responsive , do not burden him with questions about the crime. Chismoas y chimosos - realize that the patient will probably show extremes of emotions. Be prepared to handle it. - document who is at the crime when you arrive - if the patient is obviously dead when you arrive , do nothing and disturb nothing. Summon the police. You wouldn't do resuscitation or treat them if they have extreme injuries or they have been obviously dead for a while; dependent lividity or decapitation. Follow local protocols.
219
Define mechanism of injury
How the patient was injured. It includes the strength, direction and nature of the forces that caused the injury. The mechanism of injury is the basis for your index suspicion
220
Define index of suspicion?
The degree of your anticipation that the patient has been injured or has been injured during a specific way based on your knowledge that certain mechanisms usually produce certain types of injuries. Index of suspicion isn't perfect and it is only an assumption, for example you may see a mess up motor vehicle accident and think the patient is in critical condition but it turns out they're just fine. Focus more on the findings the patient presents with than MOI as they are better indicators of the patient's condition.
221
What are some common situations that should create high index suspicion for trauma injuries?
- falls - vehicle crashes - motorcycle crashes - recreational vehicle crashes (snowmobile or ATV's) - contact sports involving intentional or unintentional collision (football, rugby etc) - recreational sports (skiing, diving, or basketball etc) - pedestrian collision with a car, bus, truck, bike, etc - blast injuries from an explosion - stabbings - shootings - burns
222
What should you look for in a call potentially involving a fall?
look for evidence a fall did happen. (Fallen ladders, collapsed scaffolding, ropes in a tree or on buildings, trees nearby, stairs, balconies, roofs and windows) Now determine: - distance the patient fell - surface the patient landed on - body part that impacted first
223
What are the common types motor vehicle crashes?
- head on or frontal collision - rear end collision - side or lateral impact collision - rotational impact collision - rollover Car crashes produce some of the most lethal MOI's because forces are applied to the body, producing widespread injury to the organs , bones , muscles , nerves and blood vessels
224
When approaching the scene of a motor vehicle crash. What evidence should you look for?
External impact to the vehicle from an outside force and internal impact to the vehicle caused by the patient's body. One EMT should quickly walk around all sides of the vehicle to identify the points of impact. That EMT should also conduct a close inspection of the passenger compartment for signs of impact that correlate with specific types of injury. *In an MVA, most people don't actually die from ejection but rather when the vehicle rolls on top of them
225
What are significant external signs of vehicle impact to look for and document?
- deformity to the vehicle greater than 20 inches - intrusion into the passenger compartment - displacement of a vehicle axle (central shafts that connect to the wheels) - rollover
226
What are significant signs of patient impact in the passenger compartment to look for and document?
- impact marks on the windshield caused by the patient's head - missing rear view mirror - collapsed steering wheel - broken seat - side door damage - cracked or smashed dashboard - deformed pedals - use of restraint devices and deployment of airbags (a airbag deployment may cause damage to the windshield that can be mistaken for a patient head banging it. Examine patient's head to search for trauma and determine what hit the windshield.)
227
What are common types of impacts with motorcycle crashes?
-Head-on (the rider is propelled forward off the bike) -Angular impact (the rider strikes an object) -Ejection ( the rider is thrown from the motorcycle and impacts the ground, the object involved in the collision or both -"Laying the bike down" ( the rider purposefully lays the bike down on its side to avoid another potentially more serious impact) *it is important to document if the patient used a helmet since it can prevent/reduce severity of head injury
228
What are some factors we should be wary of with recreational vehicles?
-Snowmobiles or ATVs are commonly operate on uneven terrain, a factor that contributes to rollovers -Snowmobiles can travel at high speed , producing severe impact upon collision with trees , rocks or other vehicles. -a "clothesline" injury can occur with when a rider is pulled off the vehicle by a low branch, wire, rope or other low-hanging objects. severe trauma to the neck and airways are common.
229
What are some things you should do when you receive reports that the patient has suffered penetrating trauma such as shooting or stabbing when assessing the patient?
-You must expose and assess the patient's body to confirm or rule out a stabbing or gunshot. -with an unresponsive patient, completely expose them and look for a penetrating injury. -whether blood is visible at the scene or around the body, be sure to log roll the patient inspect the posterior body for open wounds. - heavy Coats, dark clothing, poor lighting, dark environments or dark hair, hide blood very well. you must inspect the body carefully for open wounds. For example, open wounds to the chest may not produce much bleeding but can be lethal if not immediately identified and managed.
230
What are common causes/orgins of blast injuries?
- gasoline - fireworks - natural gas - propane - acetylene - grain dust in grain elevators (wheat/corn in grain factories explode with storms) - criminal intent
231
With blast injuries, what factors influence a patient's conditon?
- the pressure wave associated with the blast - flying debris - the collision that results when a patient propelled by the blast , contacts the ground or other objects *also note burns are common at blast scenes
232
What should you do if you discover conditions at a scene are beyond your ability to handle?
Call for additional resources. This can include law enforcement, fire rescue or utility company personnel, a hazardous materials team, additional basic life support unit or advanced life support team. Try to make any calls for additional assistance before contacting patients, as after you have made contact, you're likely to completely focus on the patient's needs and not call for help. *Some cases in which determining # of patients may be difficult are during a multiple vehicle collision during a night time snowstorm or a suspected carbon monoxide poisoning in a multifamily home ****IF AN EXCESSIVE # OF PATIENTS ARE PRESENT AND ARE BEYOND YOUR UNIT'S RESOURCES AND CAPABILITIES: INITATE YOUR LOCAL MULTIPLE-CASUAL PLAN, AND START TRIAGING AND PRIORITIZING PATIENTS
233
What should you do if a scene remains uncontrolled, such as when there is a hostile crowd, when the family is emotionally charged at you, when threats are being made or when the scene is unstable because the risk of fire, explosion, or other hazards?
You must consider your own safety and if possible, move as rapidly to remove yourself and the patient from the scene and or call for additional resources as needed.
234
What is the main purpose of the primary assessment?
To identify and manage immediately life threatening conditions (WHICH MUST BE TREATED BEFORE MOVING ON IN YOUR ASSESSMENT) to the airway, breathing, oxygenation or circulation
235
What steps do you take during primary?
-General impression -AVPU/LOC's -Chief complaint/ life threats -ABC's and oxygenation -transport decision BUT ACCORDING TO THE BOOK 1. form a general impression of the patient that includes identifying and controlling major bleeding 2. Assess the levels of consciousness (mental status) 3. Assess the airway 4. Assess breathing 5. Assess oxygenation 6. Assess circulation 7. Establish patient priority
236
How long should primary assessment take?
The key is to assess and manage any immediate life threats to the airway, breathing, oxygenation and circulation during the first 60 seconds
237
When will you perform spine motion restriction (SMR)?
- if you suspect spinal cord or vertebral injury - patient complains of neck or back pain - patient complains of loss of motor or sensory function - patient complains of abnormal sensations in the extremities
238
What are current variants of SMR?
There are three types of self-resriction. In all, instruct the patient to bring his head and neck in line with his umbilicus , and not to move it. - if there is no evidence of possible spinal injury, and the patient is reliable. The patient is placed directly on the stretcher mattress in position of comfort and strapped in - if there is possible spinal injury or the patient is not reliable, a cervical collar is applied, and the patient is then placed on the stretcher mattress in a supine position and strapped in. In this case , the backboard may be used as a moving device to the stretcher. ( there is another variation in which the patient is not reliable or there is suspicion of spinal injury but in this version the patient is log rolled onto a vacuum mattress , and the patient remains in the vacuum mattress during transportation on the stretcher) Lastly, there is another version in which we do not rely on the patient on self restricting themselves, but rather an EMT manually stabilizes the head and neck with his hands to keep the patient from moving. a cervical color is applied. The patient is then logged rolled onto a backboard, a head immobilization device is strapped. The patient is strapped to the backboard. And then the patient is placed on the stretcher and secured for transport. In this case , the patient remains on the backboard during transport
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What is the chief complaint?
The patient's answer to the question: "Why did you call EMS today?" *Chief complaints can vary, for example: " My stomach hurts" pain " im having slurrrreed speechds" abnormal function " She doesn't seem to be herself" a change in function from normal Or an observation made by you: bizarre behavior indicating a possible psychiatric problem *The original chief complaint is not always the true chief complaint: In a patient who has a deformed leg may state that their chest is killing them and although the deformed leg seems obvious , they may have truly called for you to help them with their chest pain. So no. The original complaint is not always the true chief complaint
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If a patient has been complaining of abdominal pain for the previous two years , what additional question could you ask to refine a broad chief complaint like that?
"Why did you call EMS today?" This tends to focus the patient on what has changed to make him more concerned.For example, he may now state "this morning i vomited bright red blood"
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How do you obtain a chief complaint in a unresponsive patient?
It may need to be established through family, friends or bystanders or from the environment itself. Ask bystanders, "can you tell me what happened?" and "What was the patient complaining of anything before he became unconscious" You may also need to ask "Was the patient responding in any way when you were talking to them?" * if no one can be provide you an answer , the chief complaint may be what you infer from observation
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List methods of central painful stimuli:
-Trapezius pinch (Grasp 1-2 inches of the trapezius muscle and pinch) -Supraorbital pressure (slide your finger under the upper ridge of the eye socket and apply upward pressure) -Sternal rub (Apply hard downward pressure to the center of the sternum with your knuckles) -Earlobe pinch (Pinch the soft tissue of your earlobe) -Armpit pinch (pinch the skin and underlying tissue along the margin of the armpit) *Watch the patients face and body. Face for facial grimace and body for any movements to determine if they are responding to the pain stimuli. If the patient does not respond to the pain stimuli and they are unconscious, they are considered to be in a coma.
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List peripheral pain stimuli:
-Nail bed pressure (Apply point pressure to the cuticle of the nail bed) -Pinch to the web between thumb and index finger -Pinch to the finger, toe, hand, or foot
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What are purposeful movements when responding to pain stimuli?
Attempts by the patient to remove the stimulus or avoid the pain. For example, withdraws from stimulus would be a patient pushing your hand and withdraws from pain would be when they sway backwards to get away from you.
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What are the two non-purposeful movements?
When patients with a spinal cord or brain injury respond in an abnormal manner to pain stimuli. Such as flexion posturing (Decoricate, arches back and flexes arm INWARD) and extension postering (Decerebrate postering, arches back and extends arms straight OUT parallel to the body. *In patients with a spinal cord injury, besides decerebrate and Decoricate, They may only respond to pain on one side of their body or only above the site of injury
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Is it better to assess central or peripheral pain stimuli and why?
Central because with a peripheral pain stimuli, the impulse of pain goes straight to the spinal cord and sends a message for the muscle to move, bypassing the brain and hence giving no indication of brain function and leading to mistakes in your assessment. Always assess central pain stimuli so it gets transmitted to the brain and you get a good idea of the patient's brain function.
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Why is the sternal rub method of pain stimuli questioned?
Because the patient moving his arm upward to indicate a decoricate respond may be misinterpreted as a localization (withdraw of stimulus) of pain and hence this mix up can lead to errors in assessments. Basically because of confusion/ the fact that non-purposeful pain responses can be mistaken for purposeful. Also, some suggest applying the sternal rub for 30 seconds for accurate results but this may cause brusing and damage to the tissue. we don't want that.
248
What are some sounds that may indicate partial airway obstruction?
-Snoring -Gurgling -Crowing -Stridor
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Describe how snoring sounds and if its heard on inhalation, exhalation, or both?
A rough snoring sound on inspiration and/or exhalation
250
Describe how gurgling sounds and if its heard on inhalation, exhalation, or both?
A sound similar to air rushing through water on inspiration and/or exhalation
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Describe how crowing sounds and if its heard on inhalation, exhalation, or both?
A sound like a cawing crow on inspiration
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Describe how stridor sounds and if its heard on inhalation, exhalation, or both?
Harsh, high pitched sound on inspiration
253
When should we administer O2 in the medical patient?
-If the patient exhibits any signs of poor profusion or shock a high concentration of oxygen should be administered -If spo2 is below 94%. First use NC at 2 LPM and titrate up to 6 and then switch to NRM if you can't achieve <94% SPO2 with NC
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When should we administer oxygen with a trauma patient?
- if the patient exhibits any signs of major bleeding , poor perfusion or shock , a high concentration of oxygen should be administered via a NRM per minute , regardless of SPO2 - if there are no signs of major bleeding , poor profusion or shock , but the SPO2 is less than 95% percent on the initial reading or any time falls below 95% in trauma patient , a high concentration of oxygen should be administered via NRM
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What does the MARCH mnemonic mean?
M:assive hemorrhage. control any bleeding, use hemostatic gauze if a torunique can't be applied. look for any evidence of missed bleeding especially to the neck, armpits, and groin. Assess A:irway. ensure patency and suction if needed and insert NPA/OPA If needed R:espirations. Assess rate and tidal volume. Begin BVM respirations if needed. Do not overventilate. An adult should only need 10 ventilations per minute. C:irculation. Double check your bleeding control and do a blood sweep with your hands checking the body for any other bleeding. Do shock preventative measures if needed. remember to apply a pelvis binder or wrap split if pelvic fracture is present since pelvis is a major source of bleeding. H:ypothermia. Hypothermia leads to ineffective clotting in the patient. remove wet clothing and place blankets on the patient. remove them from the environment. heat the back of the ambulance. Some H's in MARCH also include head injury. *MARCH is a mnemonic that is used to guide trauma assessment and care
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What are the trauma triad of death?
Three conditions that lead to significant causes of death in trauma such as 1.Hypothermia 2.Hydrogen (increase in hydrogen leading to acidosis and inability of the body to carry O2) 3.Hypocoagulation (inability to clot effectively)
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If the abdomen is rigid, what is that a sign of?
Peritonitis *Another abnormality in the abdomen is when it becomes distented because this requires an significant amount of blood. 2 liters of blood only raises the abdomen by 1 inch. *You may also want to note that a colostomy/ilostomy is a surgical opening the abdominal wall with a bag to hold excretions.
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What does a pulsating mass in the abdomen indicate?
The abdominal aorta is weakened and bulging
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What is voluntary guarding and how do you bypass it?
When the patient can control and purposely guard his abdomen. Bypass it by making conversation or palpating with the stethoscope
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What is the Markle test?
Also known as the heel drop test is when you have the patient 1. if the patient can stand, have them stand on the balls of their heels 2. tell them to suddenly drop on their heels *Do the heel jar test if you are unable to do the heel drop test
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What does a positive Markle test indicate?
If the patient complains of abdomen pain, this is a positive test for rebound tenderness, an indication of peritonitis or other inflammation within the abdomen such as appendicitis
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How do you do the heel jar test?
1. Make a fist and strike the bottom of the patient's heel forcefully enough to jar the abdomen
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How should you treat an evisceration?
Do not attempt to push the organs back in. Cover them with moist sterile dressing and seal them with a large occlusive dressing. *An evisceration is when organs, most commonly small intestines protrude from an open abdomen wound
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What does aspirin do?
It is a blood thinner. it keeps the coronary arteries from closing completely. we administer it for this effect and not the pain relief it provides. *We administer aspirin in the patient who has chest discomfort or pain that is or may be related to a inadequate amount of O2 getting to the heart (Acute Coronary syndrome)
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What are the two routes a bronchodilator can be adminstered?
A meter dose inhaler (MDI) or a small volume nebulizer (SVN). A MDI is quick to administer and an SVN allows the patient to inhale vapors over some minutes. *Most commonly these medications cause brochodilation but some patients may use non beta 2 medication, ipratropium bromide Atrovent, which blocks the Parasympathetic Nervous System stimulation of the bronchial muscle which prevents bronchoconstriction.
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Which types of patients typically use a MDI?
Asthma, emphysema, or chronic bronchitis
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How do you nebulize a medication for an SVN route?
Place the medication in the specialized chamber and pass O2 or compressed air through to create a fine vapor.
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What forms does nitro come in?
spray or tablet. it also comes In a paste form but this form is not appropriate for the pre-hospital setting bcause of its unpredictable dosage, absorption and onset of actions
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How is nitro adminstered?
under the tongue (sublingually)
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What is the function of nitro?
vasodilator. this in turn reduces the workload of the heart
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What is the major side effect of nitro?
hypotension. it decreases Systemic Vascular resistance, hence reducing blood pressure as identified in the formula: Cardiac output x Systemic Vascular Resistance = Blood Pressure *This is why it important to measure the blood pressure before AND after administration of nitro because of hypotension being the major side effect
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how do you calculate blood pressure?
Cardiac output x Systemic Vascular Resistance. therefore a a drop in systemic vascular resistance as seen with administration of nitro, there is a decrease of BP leading to hypotension
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What are some contraindications to the administration of nitro?
patients who take medication for erectile dysfunction in the past 24 hours. In particular, tadalafil (Cialis), vardenafil (levitra), or sidenafil (Viagra) because these are medications that lower BP. *The combination of the drop of blood pressure with nitro and the erectile dysfunction meds can cause severe decrease in BP and perfusion leading to death. however, some new research shows that maybe in some cases, nitro can be administered with caution but follow local protocols
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What are all the routes of administration?
-sublingual -oral -inhalation -intramuscular injection -intranasal -subcutaneous
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How would you administer a medication sublingually?
the medication is placed under the patient's tongue to dissolve *Relatively rapid
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What medications can you administer sublingually?
-Nitroglycerin tablets -Nitroglycerin spray
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How would you administer a medication orally?
The drug is taken by mouth (swallowed) EXCEPT for activated charcol which is typically absorbed *Has to go through the digestive system. For example, aspirin is typically chewed before being swallowed so that the medication absorption can begin immediately through the oral mucosa
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What medications can you administer sublingually?
-Aspirin -Oral glucose -Activated charcoal
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How would you administer a medication via inhalation?
The medication is prepared as a gas or aerosol and is then inhaled by the patient
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What medications can you administer via inhalation?
-Oxygen -Meter-Dose Inhaler -Small-Volume Nebulizer
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How would you administer a medication via intramuscular injection?
The drug is injected into muscle mass *relatively rapid absorbtion. Do not inject into vein as serious side effects may follow and only inject into specific muscle groups
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What medications can you administer via intramuscular injection?
-Epinephrine by auto-injector or manually via syringe and needle -Naloxone hydrocloride (Narcan) by auto injecter or manually via syringe and needle
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How would you administer a medication intranasally?
the medication is sprayed into one or both nostrils use a special delivery device called a mucosal atomizer device (MAD) that is either attached to a syringe or to the device
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Why must be use the MAD method of administering medication intranasally instead of simply squirting the medication into the nose?
The mad creates a fine spray that allows sticking and absorption by the nasal capillaries and squirting the medication inside allows for it to leak and fall out of the nose, rendering it ineffective.
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What medications can you administer intranasally?
-Narcan by syringe and MAD -Narcan nasal spray (one time use device)
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How would you administer a medication subcutaneously?
It is injected under the skin into the subcutaneous layer *Slow absorption rate than intramuscular so it is not recommended for medications that require rapid absorption into the circulatory system such as epinephrine *Can be used after intramuscular injection of Narcan if you wish to produce prolonged effects of narcan
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What medications can you administer subcantaneously?
-Narcan by autoinjecter
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What are all the forms of medications?
-Compressed powder or tablet -Liquid (solution) for injection or intranasal administration -Gel -Suspension -Fine powder for inhalation -Small-volume nebulizer -Gas (O2 is the most common) -Spray
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Describe a compressed powder or tablet form of medication?
A compressed powder that is shaped into a small disk or elongated tablet
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Examples of compressed powder or tablet form of medication?
-Nitro tablets -Aspirin tablets
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Describe a Liquid (solution) form of medication?
A liquid substance with no particulate matter
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Examples of liquid (Solution) form of medication?
-Epinephrine that is injected -Narcan that is either injected or via MAD
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Describe a gel form of medication?
A vicious (think, sticky) substance that the patient swallows
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Examples of a gel form of medication?
Oral glucose
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Describe a suspension form of medication?
Drug particles that are mixed in a suitable liquid; they do not stay mixed for a long time so you must shake prior to administration
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What is an example of a suspension form of medication?
Activated charcoal
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Describe fine powder for inhalation form of medication?
A crystalline solid that is mixed with liquid to form a suspension, hence it is necessary to shake before administration *the medication appears as mist or aerosol, each dose delivers a precise measured amount of drug to the patient
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What is an example of a fine powder for inhalation?
Meter Dose Inhaler AKA MDI
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Describe a small volume nebulizer form of medication?
A device that uses compressed gas, typically oxygen, that is forced into the chamber containing medication. The gas mixes with a liquid Solution and forms an aerosol, which is then inhaled by the patient through a mask or mouthpiece; the medication is directly deposited on the muscosual lining in the respiratory tract, meaning the effect is more immediate and there are less side effects. The package comes premeasured and premixed fixed container or inhaler.
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Give an example of a spray form of medication?
Nitro, typically in tablet form but it can also come in spray form, simply spray it under the tongue
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What are the etiologies of shock? Hint: there are 3
-inadequate volume -inadequate pump function -inadequate vessel tone
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What is the formula for cardiac output?
Stroke volume X HR *In a patient with inadequate blood volume, their stroke volume will fall and hence lead to a decrease in their preload which leads to a decrease in cardiac output which means cardiac output decreases
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Describe how the etiology of inadequate volume leads to shock?
Decrease in blood volume = Decrease in preload = Decrease in stroke volume = Decrease of cardiac output = Decrease of systolic blood pressure = Decrease in tissue perfusion (because the blood pressure is responsible for delivering oxygenated blood throughout the body) = systemic vascular resistance and heart rate increase to compensate which leads to a decreased preload because the ventricle has less time to fill and it also leads to quicker organ death because the extreme vasoconstriction leads to an extreme decrease in end organ perfusion
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What are the formed elements of blood?
-Red blood cells -White blood cells -Platelets -Plasma *A decrease in stroke volume can be front the loss of whole blood or just the loss of Plasma
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Which conditions are examples of plasma loss?
Diarrhea, burns, excessive urination, capillary leakage, and excessive vomiting or sweating. They cause plasma volume loss through a shift in fulid.
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What treatment would aid a patient with inadequate volume the most? (Eithology) (whole blood loss v purely plasma loss)
-If the patient loses whole blood, there is a loss of O2 carrying capacity, in addition to the decrease in pressure and perfusion. The patient would benefit most from administration of whole blood or packed red blood cells and plasma, which would increase the oxygen carrying capability of the blood and improve pressure and profusion. *if only fluid is adminstered. The pressure and perfusion may improve but the patient would remain hypoxic because there are not enough red blood cells and hemoglobin to carry the O2. -If the patient is in shock from fluid depletion, They have enough red blood cells and hemoglobin to carry the O2 but the reduction in fulid has decreased the blood pressure and their ability to deliver O2 to the cells. Hence the patient would benefit most from restoration of fulid and water
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Describe how the etiology of inadequate pump function leads to shock?
If the heart doesn't have the strength to pump out the blood, this leads to a decrease of blood and glucose to the cells, hence a decrease in tissue perfusion
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What conditions can cause inadequate pump function?
Damage to the heart- Myocardial infarction, other diseases, old age, injury, valvular diease, rhythm disturbances, CHF Mechanical obstruction of the movement of blood into the heart- when pericardial tamponade causes the heart chambers to become compressed or the other condtion that compresses the inferiro vena cava, tension pneumothorax because of the lungs puelral space filling with air), *remember, the inadequate pump function can occur from damage to to the heart or from an mechanical obstruction
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Describe how the etiology of inadequate vessel tone leads to shock?
With extreme vasodilation, systemic vascular resistance decreases, which decreases blood pressure, which decreases perfusion to the cells. The heart has a decreased preload because not enough blood is returning to it and this leads to decrease in preload, decrease in cardiac output, and hence a decrease in further blood pressure and perfusion.
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What are some reasons why inadequate vessel tone may be found in a patient?
-an injury to the spinal cord causes the sympathetic nervous system to stop stimulating the vessel, which regulates the vessel size -release of chemical mediators that causes systemic vasodilation
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How would an patient with inadequate vessel tone be treated?
By restoring vessel tone with vasoconstriction or to fill the vessel with more fluid to increase the internal vessel pressure *both vasoconstriction and volume restoration are typically done at the same time *note that most shock treatment is beyond the scope of practice for an EMT but you must be able to recognize a shock state, provide rapid transport, and provides the appropriate emergency care. In some cases, you may want to contact ALS so they can administer medications, IV's, and other procedures in order to restore pressure, perfusion, cellular oxygenation, delivery of glucose, etc. Keep in mind though, ALS is limited (such as they only carry water based fluids and not packed blood) and you may worsen the patient's condition if you wait too long
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What are the categories of shock?
-Hypovolemic -Distributive -Cardiogenic -Obstructive -metabolic/respiratory (only some sources list this category)
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What is Hypovolemic shock?
When you have low blood volume. It can be due to blood loss or loss of some other type of body fluid. The most common cause is hemorrhage. *the most common form of shock
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What is Distributive shock?
A decrease in intravascular volume caused by massive systemic vasodilation and an increase in capillary permeability. With vasodilation, there is usually no actual loss of fluid or blood from the vessels , but rather a relative reduction in volume that is adequate to fill the increased size and capacity of the vessels. This leads to a decrease in blood pressure, a decrease in preload, a decrease in stroke volume, a decrease in cardiac output, a decresse in blood pressure, and overall, a decrease in perfusion *in some conditions, the capillaries become more permeable, leading to leakage and fluid loss
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What are the subcategories of Distributive shock?
-Septic shock -Neurogenic shock -Anaphylatic shock
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What are the subcategories of Hypovolemic shock?
-Hemorrhagic shock -Non-hemorrhagic shock -Burn shock (a specific type of nonhemmoragic shock)
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What is Cardiogenic shock? (The category)
When the patient has adequate blood volume and vessel tone but inadequate pump function. The inadequate pump function leads to a decrease in stroke volume, cardiac output, blood pressure, and hence a decrease in perfusion. *the patient is prone to cardiogenic shock is they had 40% of their left ventricle deadened from myocardial infarction
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What are the subcategories of cardiogenic shock?
-From Myocardial Infarction -Heart failure -From beta blockers / calcium channel blockers -From abnormal rhythm -Valvular disease -From decreased pump function
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What is Obstructive shock?
The blood volume is adequate and the heart is not damaged and the vessels are of normal size with adequate resistance , but an obstruction is not allowing the blood to move forward. This reduces preload, stroke volume, cardiac output, blood pressure, and hence decreases tissue perfusion. A common example of this display is pulmonary embolism. ☆THE BOOK MENTIONS PERICARDIAL TEMPONADE AND TENSION PNEUMOTHORAX AGAIN. these conditions prevent adequate ventricular filling and they compress the heart.
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What are the subcategories of Obstructive shock?
-From tension pneumothorax -From pulmonic embolism -From pericardial tamponade
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What is metabolic or respiratory shock?
A dysfunction in the ability of oxygen to diffuse into the blood, be carried by the hemoglobin, off-load at the cell or be used effectively by the cell for metabolism. Certain poisons produce this effect. For example, cyanide interferes with the cell's ability to use O2 and Carbon monoxide poisoning interferes with the hemoglobin ability to carry O2 because it replaces the O2
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What is the subcategorie of metabolic or respiratory shock?
Disturbances in oxygen diffusion, carrying, off loading, or use by the cells
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What is hemorrhage Hypovolemic shock?
Results from the loss of whole blood from the intravascular space. Once whole blood is lost , there is not only decrease in perfusion from a reduction in pressure , but also a decrease in oxygen carrying capacity of the blood and hemoglobin.
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How do you treat hemorrhagic Hypovolemic shock?
1. Stop bleeding 2. Administer red blood cells and other components to replace the intravascular blood volume and clotting function that was lost * the patient requires immediate transport for surgical intervention to stop the bleeding
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What is nonhemmoragic Hypovolemic shock?
When fluid shifts out of the intravascular space , however , red blood cells and hemoglobin remain within the vessels , but it is primarily water plasma proteins and electrolytes that are lost. This reduces the blood volume pressure and perfusion of the cells, but the oxygen carrying capacity of the remaining blood is preserved. Examples include severe diarrhea, vomiting, excessive sweating, and excessive urination
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How do you treat nonhemmoragic Hypovolemic shock?
Administration of IV fluids so call ALS if local protocols suggest so
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What is burn shock? (A type of Hypovolemic shock)
Burns can interrupt the integrity of the capillaries and vessels and allow them to leak plasma proteins. Thus burns may disrupt the body's fluid balance. When the capillary is damaged from a burn, it becomes permeable and the push from hydrostatic pressure forces fluid out of the capillary and into the institial space. Plasma proteins have a pull effect so when they leak out, the plasma proteins that are outside of the vessel draws fluid out of the capillary. This leads to a collection of fluids causing edema and leads to a loss of fluids, causing Hypovolemic shock.
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What treatment should you perform for burn patients?
1. Establish and maintain an adequate airway , ventilation and oxygenation 2. Prevent further contamination of the burn injury * most burn patients die in the pre-hospital setting from airway obstruction, inadequate ventilation or toxic exposure. *also note burn shock takes several hours to occur
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What is anaphylatic shock? (A type of Distributive shock)
Chemical mediators that are released in the anaphylactic reaction cause massive systemic vasodilation. These chemical mediators also cause capillaries to become permeable and to leak. Vascular resistance decreases, resulting in a decrease in blood pressure and perfusion. The loss of fluid from the capillaries further reduces the intravascular volume, causing the preload to decrease, along with the decrease of , stroke volume, cardiac output, systolic blood pressure and perfusion to decrease.
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How can we treat anaphylactic shock?
Epinephrine. It contains alpha properties that cause systemic vasoconstriction, which reduces the vessel size and increases the resistance, resulting in an increase in blood pressure and profusion. In addition , the vasoconstruction tightens the capillaries and lessens the fluid leakage. *also remember to maintain airway management, ventilation, and Oxygenation
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What is septic shock? (A type of Distributive shock)
Resulting from sepsis that causes the vessels throughout the body to dilate and become permeable. Fluid leaks out of the vessels into the interstitial space. The shock state is created by the massive vasodilation, which reduces the systemic vascular resistance, blood pressure and perfusion. Also , the loss of fluid reduces the intravascular volume and decreases the preload, stroke volume, cardiac output, systolic blood pressure and perfusion. *defined as severe sepsis with hypotension (systolic blood pressure below 90)
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What is sepsis?
The bodies exaggerated inflammatory response to an infection, typically fungal, viral or bacterial. It overwhelms the bodies normal defense and regulatory systems causing disruption in cell and organ function. *mortality rate for sepsis is 40%. With 60% of sepsis patients being geriatric. *sepsis is the 10th most common cause of death in the U.S
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What are the main S/S of sepsis?
- Increased capillary permeability - Vasodilation - myocardial depression , which also leads to cardiogenic shock as well - alveolar/capillary membrane damage, allowing fluid to accumulate in the alveoli
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What are the key physical findings of sepsis?
- Tachycardia - Tachypnea - hyperthermia or hypothermia - hypotension *other signs and symptoms include flushed, warm skin (early), Mottled and cyanotic skin (late) and altered mental status
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If sepsis is thought to be from a respiratory infection , the patient may present with what?
- productive cough - fever - chills - upper respiratory symptoms ( runny, or stuffed nose and sneezing) - throat or ear pain - crackles upon auscultation (may indicate pneumonia)
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If sepsis thought to be from a genitourinary tract infection, the patient may present with what?
- abdominal pain or flank tenderness - nausea and vomiting - diarrhea - dysuria - polyuria
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Treatment of sepsis?
You will focus on managing the airway, ventilation and oxygenation, but the patient would benefit from IVs, vasoconstrictors and antibiotics, so call ALS
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What is neurogenic shock? (A type of Distributive shock)
Also known as vasaogenic shock, is when you damage your spinal cord which damages the sympathetic nerve fibers that control vessel tone BELOW the level of injury. Loss of sympathetic tone causes the vessels to dilate. This can lead to a drop in systemic vascular resistance, blood pressure and perfusion. However, in this condition, there is no fluid loss. The drop in perfusion is sloely from widespread vasodilation , blood begins to pool in the peripheral vessels , causing a decrease in the preload, stroke volume, cardiac output and systolic blood pressure , causing a further decrease in perfusion.
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How do we treat neurogenic shock?
Emergency care focuses on spine motion restriction and management of the airway, ventilation and oxygenation. This patient may also benefit from IVs and vasoconstrictors so consider calling ALS.
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What is cardiogenic shock? (The type of shock)
It is both a category and a type of shock. It is most often due to an acute myocardial infarction, congestive heart failure, abnormal cardiac rhythm, disease, infection or overdose on drugs that depress the pumping function of the heart, such as beta-blockers or calcium channel blockers. The depressed pump function reduces the force on the left ventricle contraction, reducing stroke volume, cardiac output, Systolic blood pressure and perfusion.
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How would we treat cardiogenic shock?
By managing the airway, ventilation and oxygenation. The patient may benefit from intervention and medication to administered by ALS.
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Why is severe shock in children so unusual?
Their blood vessels constrict very efficiently, which helps to maintain blood pressure. But only for so long , when adverse conditions are not corrected in a timely fashion and the conditions leading to shock continue.The blood pressure eventually drops and it normally occurs rapidly and eventually precipitates cardiac arrest. Children have great compensary mechanisms , but they decompensate rapidly once overwhelmed. * note that cardiac pulmonary arrest is typically due to either respiratory failure or shock. *Children cannot alter their cardiac output much and thus are very dependent on increasing pulse
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What is a very common cause for newborns to go into shock?
Loss of body heat because they have immature thermal regulatory systems and cannot shiver or warm themselves through muscular activity. Their skin surface area is large in relation to their body weight , which increases their rate of heat loss.
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What is the emergency medical care for shock within the pediatric patient?
1. Control any bleeding 2. Establish and maintain an airway (maintain a SPO2 above a 95% with NRM 15LPM) 3. If the breathing is or becomes inadequate , begin positive pressure ventilation 4. Place the patient in a supine position 5. Keep the patient warm and as calm as possible ( if the patient is a newborn, preheat an isolette or your ambulance to at least 98⁰ (36.5⁰c) if you cannot do this, wrap the baby in warm blankets (pre warmed if possible) And then wrap the baby in aluminum foil to preserve the bodies heat. be sure that the baby's head is covered but not the face 6. Transport
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In your assessment of a cardiac arrest pregnant patient, what should be your priority?
Oxygen and ventilation, it is also imperative that the pregnant patient in cardiac arrest be transported immediately to a medical facility because the fetus requires a c section within 5-6 minutes to survive. *Maternal cardiac arrest can occur due to a number of reasons such as hemorrhage, cardiovascular disease, amniotic fluid, embolism, sepsis, aspiration pneumonitis, pulmonary embolism or eclamsia.
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With a pregnant patient at 20 weeks of gestation or greater, why must we perform a lateral uterine displacement (LUD)?
The weight of the fetus can compress the inferior vena cava when the patient is in a supine position. This causes a decrease in blood return to the right ventricle, and a decrease in blood pressure. If the patient is in cardiac arrest, this decrease in blood return significantly decreases the effectiveness of chest compressions and the arterial pressure needed to perfuse the brain and the heart.
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How can we estimate the gestational age?
We can palpate the location of the top of the uterus (the fundus). If the height of the fundus is at or above the level of the umbilicus , the pregnant patient you would estimate the fetal gestational age to be at or greater than 20 weeks. The older the fetus , the higher the fundus is located towards the xiphoid process.
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What are the two techniques you can do to perform lateral uterine displacement and how?
One-handed technique: position yourself on the right side of the patient and take your extended right hand and place it on the lateral aspect of the abdomen at and just below the umbilicus and manually push the uterus to the left Two-handed technique: position yourself on the left side of the patient and take both of your hands and place them on the right lateral aspect of the abdomen with a hands extended and the tips of the fingers of both hands, touching and forming a sort of cradle with the umbilicus in the center and manually pull the uterus toward you to the left side of the patient. *You must maintain LUD the whole time when you are performing compressions. If a pulse returns and chest compressions are no longer needed, the right hip can be elevated to take the weight off the inferior vena cava. Should cardiac arrest occur again, move her back into the supine position and resume LUD with compressions
349
What is emphysema?
A permanent disease process distal to the terminal bronchioles that is characterized by the destruction of the alveolar walls and the distention of the alveolar sacs and a gradual destruction of the pulmonary capillary beds with a severe reduction in the alveolar/capillary area in which gas exchange can occur. * it is more common in men than in women , and it is most often seen in people aged 60-70.
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What are the two primary causes of emphysema?
1. Smoking 2. A genetically triggered decrease in the protein called alpha 1 antitrypsin. This genetic emphysema can occur in people 40-50 years old. *people who are continuously exposed to environmental toxins are predisposed to developing emphysema
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What is the pathophysiology of emphysema?
The lung tissue loses its elasticity and the alveoli becomes distended with trapped air and the walls of the alveoli are destroyed. This loss of the alveolar wall reduces the surface area in contact with pulmonary capillaries. Therefore , a drastic disruption in gas exchange occurs and the patient becomes progressively hypoxic (COPD) and begins to retain carbon dioxide.
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What are the S/S for the emphysema patient?
- anxious, alert and oriented - dyspneic - USES ACCESSORY MUSCLES (because breathing becomes an active process) - THIN BARREL CHEST APPEARANCE (from chronic air trapped in the alveoli) - coughing but with little sputum - prolonged exhalation (due to loss of elasticity of lungs) - diminished breath sounds - wheezing and rhonchi on auscultation - PURSED-LIP BREATHING (physiologic Positive End-Expiratory Pressure (PEEP) because breathing is difficult for the patient so they create a back pressure in the distal bronchioles , keeping them more open than if they didn't purse their lips) - extreme difficulty of breathing on minimal excertion -TACHYPNEA - typically greater than 20 BPM (to compensate for the disease process) -Tachycardia - Diaphoresis (sweating; moist skin) -SPO2 of 94% or greater unless in respiratory failure -Tripod position - May be on home oxygen
353
What is pulmonary embolism?
When an obstruction of blood flow in the pulmonary arteries leads to hypoxia
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Who is at risk for pulmonary embolism?
- patients with long periods of immobility (bedridden, those who travel for a long time, or with splits to the extremities) - heart disease - recent surgery - long bone fracture patients - venous pooling associated with pregnancy - cancer - deep vein thrombosis - estrogen therapy - clotting disorders - history of previous pulmonary embolisms - those who smoke
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What is the pathophysiology of pulmonary embolism?
A sudden blockage of blood flow through a pulmonary artery or one of its branches. The embolism is usually caused by a blood clot, but it can also be caused by an air bubble, a fat particle, a foreign body or amniotic fluid. The embolism prevents blood from flowing to the lungs. As a result , some areas of the lungs have oxygen in the aveoli (adequate ventilation) but are not receiving any blood flow (reduced perfusion). This leads to hypoxia , based on how large the embolism blocking the arteries is, the larger ones leading a decreased severity of hypoxia.
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Which condition should we suspect if the patient presents with a sudden onset of unexplained dyspnea and chest pain ( typically sharp and localized to specific area of the chest) and has signs of hypoxia , but who has normal breath sounds and adequate volume
Pulmonary embolism
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What are the S/S of pulmonary embolism?
- SUDDEN ONSET OF UNEXPLAINED DYSPNEA - signs of difficulty in breathing or respiratory distress; rapid breathing - SUDDEN ONSET OF SHARP STABBING CHEST PAIN, PREDOMINANTLY DURING INHALATION - cough (may include blood) - tachypnea - tachycardia - syncope - cool, moist skin - restlessness, anxiety or sense of doom - cyanosis (might be severe/late sign) - distended neck veins (late sign) - crackles - fever - SPO2 less than 94% - signs of complete circulatory collapse - NO ABNORMAL BREATH SOUNDS AND ADEQUATE VOLUME *assess for deep vein thrombosis for patients in which you suspect pulmonary embolism
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What is the emergency medical care for pulmonary embolism?
1. Open the airway and initiate positive pressure ventilation with supplemental oxygen or administer oxygen to maintain a SPO2 of 94% or greater 2. Continuously monitor the patient for signs of respiratory failure , respiratory arrest , hypotension , poor perfusion , and cardiac arrest 3. Transport
359
What are the kinds of pulmonary edema?
Cardiogenic and noncardiogenic
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What is cardiogenic pulmonary edema?
It is typically related to an inadequate pumping function left ventricle. It drastically increases the pressure in the pulmonary capillaries, forcing fluid to leak into the space between the alveoli and capillaries and eventually into the alveoli
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What is non cardiogenic pulmonary edema?
Also known as acute respiratory distress syndrome (ARDS) results from destruction of the capillary bed that allows fluid to leak out. * common causes of noncardiogenic pulmonary edema are severe pneumonia, aspiration of vomitus, submersion, narcotic overdose, inhalation of smoke or other toxic gases, ascent to high altitudes, sepsis and trauma. * the most significant problem associated with pulmonary edema is hypoxia
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What is the pathophysiology of acute pulmonary edema?
Typically caused by cardiogenic ethiology occurs when an excessive amount of fluid collects in the spaces between the alveoli and the capillaries. This intrusion of fluid disrupts normal gas exchange which makes less oxygen available to the blood flowing through the capillaries (perfusion). This leads to hypoxemia and cellular hypoxia. The offloading of carbon dioxide from the capillaries into the alveoli is also impended, leading to hypercarbia.
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What are the S/S of acute pulmonary edema?
- dyspnea, especially on exertion - difficulty in braving when lane flat (ORTHOPNEA) - waking up suddenly short breath ( PAROXYSMAL NOCTURNAL DYSPNEA (PND)) - PINK AND OR FROTHY SPUTUM (only cardiogenic type) - tachycardia - anxiety, apprehension, combativeness and confusion - tripod position with legs dangling - fatigue - CRACKLES AND POSSIBLY WHEEZING ON AUSCULTATION - cyanosis or dusky-colored skin - pale, moist skin - distended neck veins (cardiogenic type only) - swollen lower extremities (cardiogenic type only) - cough - fever - symptoms of cardiac compromise - SPO2 less than 94%
364
What is the emergency medical care for acute pulmonary Edema?
1. If there's any evidence of inadequate breathing , you need to begin PPV with a BVM and provide supplemental oxygen 2. CPAP can be extremely beneficial in the acute pulmonary edema , patient in respiratory distess or early respiratory failure but they MUST be awake, alert, oriented, be able to follow commands (GCS needs to be greater than a 10) breathe on their own, maintain their own airway, and have a SPO2 less than 94%). The positive pressure forces the oxygen across the alveoli and into the capillaries *if patient doesn't fit criteria for CPAP, do BVM *keep the patient in the upright sitting positon and transport
365
What are the three areas we look for in a pediatric respiratory failure patient?
-how hard they're working to breathe - their appearance - their circulation
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What evidence suggests that a pediatric patient in respiratory failure is increasing their work breathing because it has become more difficult for them?
- flared nostrils - retractions - abnormal sounds (stirdor, grunting, wheezing) - abnormal positioning (sniffing, tripod, refusal to lie down) - head bobbing
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In a pediatric patient , what evidence for their appearance suggests that they are in respiratory failure?
- irritable - inconsolable - gaze - decreased muscle tone
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In a pediatric patient , what evidence for circulation suggests that they are in respiratory failure?
- cyanosis - pale - mottled
369
What is angina pectoris? Hint: there are two types
A symptom commonly associated with coronary artery disease. It means pain in the chest. There is classic angina, which typically occurs upon an increased workload placed on the heart, and there's unstable angina, which indicates angina discomfort that is prolonged and worsening or that occurs without exertion and when the patients at rest.
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What is the pathophysiology of angina pectoris?
It is a symptom of inadequate oxygen supply to the heart muscle or myocardium. As noted earlier , it typically results from a decrease in oxygen delivered to the myocardium , which is often caused by partial blockage of the coronary arteries , causing ischemia, which results in tissue hypoxia. Angina can also occur from a dramatic increase in demand on the heart , such as from a cocaine induced myocardial infarction.
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What are the S/S of angina?
- study discomfort, usually located in the center of the chest but it can be more diffuse throughout the front of the chest - DISCOMFORT , THAT IS USUALLY DESCRIBED AS pressure, SQEEZING, TIGHTNESS, aching, CRUSHING OR heavy - DISCOMFORT THAT IS TYPICALLY FELT UNDER THE STERNUM AND MIGHT RADIATE TO THE SHOULDERS , ARMS , NECK , JAW , BACK OR EPIGASTRIC REGION - cool, clammy skin - anxiety - dyspnea (Shortness of breath) - diaphoresis (excessive sweating) - Nausea and vomiting - complaint of indigestion pain * the pain typically lasts for 2-15 for classic agina
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Describe how women, diabetics, and the elderly may have atypical presentation of angina?
The discomfort can appear to be more diffuse or can be described more vaguely. These patients might not have any chest pain or discomfort , but might instead complain of epigastric pain , shortness of breath , nausea , fainting , weakness or lightheadedness
373
How does classic angina differ from unstable angina?
Classic: - typically relieved with rest and nitroglycerin * if classic angina following exertion is not relieved after rest or after three nitroglycerin tablets or sprays over a 10 minute period you should recognize this as an acute coronary syndrome emergency and provide transportation and treatment immediately Unstable: - pain or discomfort that occurs at rest - pain that continues without relief - prolonged pain *if the patient experiences angina that occurs at rest and lasts for more than 20 minutes, angina with a recent onset that progressively worsens or angina that wakes up the patient and night (nocturnal angina) You should view it as a cute coronary syndrome emergency and provide prompt treatment and transport
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What is the emergency medical care for angina pectoris?
1. Establish an open airway 2. If the patients respirations become inadequate, begin PP 3. If the patient is dyspneic or hypoxemic, has obvious signs of heart failure or has an SPO2 below 90%, and minister supplemental oxygen to reach an SPO2 of 90%. Use NC at first 2-6 titrate upward and then NRM 10-15. 3. Administer nitro IF thier systolic blood pressure is greater than 90mmHg. Place them in a sitting or lying position and administer the nitro tablets or sprays. ( if you patient is suspected of suffering a coronary artery occlusion, administer 160-325 mg of aspirin if local protocol allows) * the american heart association 2020 guidelines for cardiopulmonary resuscitation and emergency care for cardiovascular care continues to indicate that there is not sufficient evidence to support the routine use of supplemental oxygen in patients who do not present with dyspnea, hypoxemic, or heart failure. ADMINISTERING TOO MUCH OXYGEN IN ACUTE CORONARY SYNDROME CAN CREATE FREE RADICALS
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What is acute myocardial infarction?
When a portion of the heart muscle dies because of the lack of adequate supply of oxygenated blood.
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What is the pathophysiology of an acute myocardial infarction?
It is typically the result of a coronary artery disease that causes severe narrowing or complete blockage of the coronary arteries. For example a plaque, erosion or rupture within the coronary artery can cause narrowing and blockage to occur. The result is a portion of the heart muscle does not receive adequate oxygenation and approximately 20-30 minutes without adequate perfusion , the heart muscle begins to die. * on rare occasions , a heart attack can result from a spasm with a coronary artery such as use of cocanine
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When a heart muscle becomes ischemic, what is the patient at risk for?
If the blood flow is not restored to the portion of the heart, the cells begin to die and the ischemic heart tissue can become irritable. This can produce dysrhythmias, such as ventricular fibrillation , and ventricular tachycardia, which can be fatal. *V-Fib is the most common dysrhythmia the patient will suffer initially in cardiac arrest, and it usually occurs within the 1st hour after the onset of S/S but the patient remains at risk for the first 24 hours.
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What are the S/S of acute myocardial infarction?
- CHEST DISCOMFORT , RADIATING TO THE JAWS , ARMS, SHOULDERS OR BACK - anxiety - dyspnea - SENSE OF IMPENDING DOOM - diaphoresis (sweating) - nausea and vomiting - light headedness or dizziness - weakness - PROLONGED CHEST DISCOMFORT - CHEST DISCOMFORT THAT IS PARTIALLY OR IS NOT RELIEVED AT ALL WITH NITROGLYCERIN *super similar to unstable angina
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How may diabetics, geriatric patients and women be prone to an atypical presentation of acute myocardial infarction?
They may suffer a silent "MI" in which no chest discomfort is experienced but rather , they might only complain of shortness of breath , nausea , lightheadedness or weakness
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What is the emergency medical care for acute myocardial infarction?
1. This patient has the potential to go into cardiac arrest. Therefore, you should maintain a vigilant watch over the patient's condition. If possible , the patient should never be left alone. The automated external defibrillator (AED) must always be available for the patient. Some services even apply the AED pads without connecting it to the AED as a precaution to save time. 2. ensure a patent airway and provide PPV with oxygen if the breathing is inadequate. If the respiratory rate and tidal volume are both adequate , consider supplemental oxygen. Reach a SPO2 of 90%, start with NC 2-6 titrating up and then go to NRM 10-15 3. Place the patient in a position of comfort 4. If the patient has a prescription for nitroglycerin and administer one tablet every 3-5 minutes up to a total of 3 times. Ensure that the systolic blood pressure is above 90 mmHg 5. Administer 160-325 mg of aspirin if local protocol allows 6. notify the receiving hospital early of suspected myocardial infarctions 7. Acquire and transmit a 12 lead ECG if your protocol permits 8. continue to assess the patient en route to the Medical Facility and contact ALS for further Assistance if available * with the availability of techniques to restablish blood flow in the coroner artery by mechanically increasing the internal lumen size and medications called fibrinoytic agents. It might be possible to dissolve the clot, reopen the coronary artery and restore perfusions to the ischemic heart muscle, prompt recognition and transport is necessary because the window of time to mechanically open the vessel or to administer the fibinolytic drug is limited.
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Why is administering too much oxygen dangerous in acute coronary syndrome?
Because in acute coronary syndrome, the coronary artery is occluded and cuts off blood supply to the heart tissue.This area of tissue becomes a ischemic from the lack of oxygenated blood and during this period, if you administer too much oxygen, there's an inflammatory response and the release of damaging molecules made from oxygen , which are referred to as FREE RADICALS. * administration of too much oxygen also causes the coronary arteries to constrict , which in turn causes a decrease in the blood flow to the area of ischemic tissue ( THIS IS WHY THE IDEAL SPO2 IS 90% IN A ACUTE CORANARY SYNDROME PATIENT) ( ADMINISTER O2 USING STARTING WITH A NC AT 2-6 LPM TITRATING UP AND SWITCH TO NRM 10-15 IF SPO2 OF 90% CANNOT BE ACHIEVED VIA NC)
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What is reperfusion injury?
When you restore blood flow to an ischemic area and create free radicals , which damage cell membranes and other cellular components, and result in cell death. *Reperfusion is the restoration of blood to an area of tissue that was ischemic from low blood flow or occlusion of a vessel
383
What are the indications for nitroglycerin?
- the patient exhibits signs and symptoms of chest pain or discomfort, consistent with acute coronary syndrome - the patient has a physician prescribed nitroglycerin , or it is carried on the EMT unit - the EMT has received approval from medical direction to adminsiter the medication
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What are the contraindications for nitroglycerin?
- the patient's baseline systolic blood pressure is below 90 mmHg or the systolic blood pressure has decreased greater than 30 mmHg from the baseline - the heart rate is less than 50 BPM or greater than 100 BPM - the patient has a suspected head injury - the patient is an infant or child - 3 doses have already been taken by the patient - the patient has taken erectile dysfunction pills tadalafil (Cialis) within the past 48 hours or vardenafill (Levita) or sildenafil (Viagra) within the past 24 hours
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What is the dosage for nitroglycerin?
Either one tablet (0.3 mg) or one spray (0.4 mg) under the tongue. The administer dose may be repeated every 3-5 if: 1) the patient experiences no relief 2) the blood pressure remains greater than 90 mmHg or does not fall 30 mmHg below the baseline systolic blood pressure 3) the heart rate remains above 50 BPM and below 100 BPM 4) medical direction gives approval * the total dose is 3 tablets for sprays
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What are the side effects of nitroglycerin?
-headache -a drop in blood pressure - changes in pulse rate as the body compensates for changes in the blood vessel size
387
For the patient to remain in an awake or conscious state , what functioning components of our brain are required ?
- reticular activating system - at least one cerebral hemisphere must be intact
388
What are the structural causes of AMS?
-brain tumor -hemorrhage in the cranium but outside of the brain -hemorrhage in the brain tissue -direct brain tissue damage from trauma to the brain -degenerative disease of brain -brain abbesses or infection
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What are the toxic metabolic causes of AMS?
-severe hypoxia or anoxia (reduced or no O2) - Abnormal GBL (high or low) -Liver failure -Kidney failure -Poisoning
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What are other causes of AMS?
-shock -drugs that depress the CNS -Post seizure -Infection -Cardiac rhythm disturbance -Stroke
391
Describe ischemic stroke?
87% of all strokes and there are two types, thrombotic stroke (clots at the site) and embolism stroke (clots at a different site)
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Describe hemorrhagic strokes?
13% of all strokes, and there are two primary causes, an aneurysm (ballooning of a weakened area within the artery) or an arteriovenous malformation (abnormally formed blood vessels in the brain). it is a rupture of a weakened artery that causes bleeding in the brain.
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What are the S/S of hemorrhagic stroke with bleeding the the brain tissue (intracerebral)
-Headache -Nausea and vomiting -Weakness to one of the body -Decreased levels of consciousness
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What are the S/S of hemorrhagic stroke with bleeding the the brain tissue (subarchnoid space)
-worst headache -intolerance to light -vomiting -decreased LOC's
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Transient ischemic stroke, true or false, does it resolve by itself?
It does but it must always be taken seriously because it is typically a precursor to a stroke. 15% of TIA's lead to a stroke in the following 90 days *Most last less than 5 minutes, and the S/S typically clear up in a few minutes but most resolve within 60 minutes. Some may last for up to 24 hours.
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What are the common S/S of anterior circulation stroke?
-Paralysis and motor deficiencies (unilateral) -Numbness, tingling, and loss of sensation -Language disturbance (expressive aphasia, receptive, or global) -vision disturbance (could be loss of partial or complete vision and it's like a curtain or fog, eye movements remain normal) -Eye gaze (conjugate eyes, both eyes are together toward the side of the brain with the clot)
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Expressive aphasia vs receptive aphasia vs global aphasia
Expressive: they understand but they can't formulate their words receptive: they don't understand but they can formulate their words global: they don't understand or speak right
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What are the common S/S of posterior circulation stroke?
-Paralysis and motor deficiencies (unilateral) -Numbness, tingling, and loss of sensation -Language disturbance (more slurred and difficult to understand speech due to facial paralysis) -vision disturbance (complaints of double vision (diolopia) or bouncing of vision.) -Eye gaze (dysconjugate eyes, eyes look away from each other) -Ataxia (loss of coordination) and vertigo -Dizziness, nausea, and vomiting
399
What is status epilepticus?
-a continuous seizure actively lasting longer than 5 minutes -two or more sequential seizures without full recovery between seizures
400
According to the American Epilepsy society, status epilepticus presents in which three ways?
-Generalized convulsive status epilepticus with a persistent postical depression mental status between seizures -Non convulsive seizures that produce a continuous or fluctuating epileptic twilight state -Repeated partial seizures with focol motor signs, focal sensory defects or focal impaired function, not assocted with alerted awarenss
401
status epilepticus may lead to which of the following complications?
-aspiration -brain cell damage from hypoxia and lack of glucose -Rhabdomyolysis (muscle damage with the release of proteins that can damage the kidneys) -fractures or dislocations
402
What are the main functions of insulin?
-increase the movement of glucose out of blood into the cells -causes the liver to take glucose out of the blood and convert it into glycogen -decreases GBL by actions just listed *if insulin is inadequate, glucose moves into the cell 10x slower, causing glucose build up in the blood
403
Does glucose need insulin in order to cross the blood brain barrier?
No, but be careful because glucose is the only energy source for the brain
404
What is diabetes Mellitus? Hint: what are the two primary issues?
A condition in which there is a disturbance in the metabolism in carbohydrates, fats, and proteins *The two primary problems in this condition is a lack of insulin secreted by the pancreas and the inability of the cell receptors to recognize insulin and allow glucose to enter at a normal rate
405
When is a patient considered hyperglycemic?
over 200
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What are the four types of diabetes mellitus?
-Type 1 -Type 2 -DKA -Hyperglycemic hypoersmolar syndrome (HHS)
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What is type 1 diabetes?
When the patient's pancreas cannot secrete insulin. *more common in young fresh meat
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What is type 2 diabetes?
When your bodies receptors don't recognize insulin
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What is HHS?
25% of HHS patient suffer from type 1 diabetes and 75% suffer from type 2 and it is more common in white folk. Remember it is more common in type 2. It raises the GBL to extreme levels such as 700-1200 mg/dl but it does not produce ketones because some glucose is still getting into the cells.
410
What is DKA?
Most common in type 1 patients. Blood glucose is greater than 250 and ketones are produced, making the body acidic. *The two main probelms It creates is dehydration and acidosis *Glucose pulls water and as we piss, it gets dragged out *The body metabolizes fats for energy, creating ketones
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What are the indications for oral glucose?
-AMS -History of diabetes -GBL less than 70 mg/dl -Ability to swallow the medication *Common other names oral glucose glutose and insta-glucose
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What are the contraindications for oral glucose?
-unresponsive or unable to swallow -A confirmed GBL of 70 or above
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What is the dosage of oral glucose?
1 tube
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How would we administer oral glucose? (the steps)
1.get permission from medical direction 2. ensure S/S are consistent with hypoglycemia, if protocol allows, get a GBL reading 3. ensure patient is responsive and able to swallow and able to protect their airway. Maintain watch of patient's airway to make sure it stays patent and they do not aspirate or have a blocked airway due to the glucose 4. There are two ways to administer. 1. hold back the patient's cheek and squeeze a small amount of glucose between the cheek and gum 2. place a small amount of glucose on a tongue depresor (a stick), pull back the check and slide the tongue depressor to administer medication between the cheeks and the gums
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What are the S/S of DKA
The three P's -Polyuria -Polyphagia (hunger) -Polydispsia (thrist) -nausea and vomiting -tachycardia -kussmual breathing -Fruity breath -BGL greater than 250 -Abdominal pain *When treating diabetes, err to the side of administering glucose if you are unsure if it is hypoglycemia or hyperglycemia
416
What is the emergency medical care for DKA?
1. establish and maintain a patient airway 2. maintain adequate oxygen greater than 94% use NC 2-6 LPM titrate up and switch to NRM 10-15 LPM if NC don't work 3. if breathing is inadequate, provide PPV 4. determine the BGL 5. If BGL is less than 70, adminster oral glucose if patient can swallow 6. contact medical direction for further orders
417
What emergency care should you provide for a anaphylactic reaction patient?
-Maintain a patent airway (use a PPV to ventilate the patient because their airway might be swollen, it would be more difficult with a BVM) -Suction any secretions -Maintain adequate oxygenation, greater than 94%, USE NRM because NC cannot provide adequate oxygenation unless in a less severe patient -be prepared to assist ventilations -ADMINISTER EPINEPHRINE -Consider calling ALS -Initiate early transport
418
What are the actions of Alpha1, Alpha 2, Beta 1, and Beta 2
A1- vasoconstriction A2 - regulates A1 B1 - Increases HR and force of contraction B2 - Brochodilation
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What is the dosage for epinephrine?
0.30 mg for patients who weigh 66 lbs or greater 0.15 for infants and children 33-66 lbs *The dose can be repeated in 5-15 minutes if the condition does not improve *it is preferable to inject in the site with minimal clothing, into the thigh
420
What is an opioid?
Any natural , synthetic or semisynthetic agent that mimics the effects of morphine *opiate is a term for drugs that come from opium, narcotics are drugs that put you to sleep, therefore, opioid is an umbrella term for drugs
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What are the S/S of opioid toxicity?
-CNS depression -respirarory depression -miosis (constricted pupils) Other S/S may include: - seizure - psycho motor delay and disabilities - dysarthira (speech disturbance) - ataxia (incoordination) - tremors - crackles - hearing loss - hypotension - bradycardia - nausea and vomiting - urinary retention - itching, flushing and hives - hypoglycemia - hypothermia
422
What is the emergency medical care for opioids?
1. Establish and maintain an open airway 2. Assess the breathing status 3. Maintain adequate oxygenation above 94% 4. Administer narcan 5. Transport 6. Reassess for deterioration
423
What is Hepatitus B?
One of several viruses that directly affect the liver, it can be contracted through blood and body fluids *vaccine available
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What are the S/S of hepatitis B?
- fatigue - nausea and loss of appetite - abdominal pain - headache - fever - jaundice - dark urine
425
What is Hepatitius C?
The most common bloodborne infection in the united states , it is also a virus. *vaccine NOT available
426
S/S of Hepatitis C?
- jaundice - fatigue - abdominal pain - nausea - dark urine - loss of appetite
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How do you protect yourself from viral infections like hepatitis B?
- wear disposable protective gloves - wash your hands, wrist, and forearms throughly with hot soapy water - get vaccinated - double bag and seal all soil refuse dispose of it - clean, disinfect or sterilize all non disposable equipment
428
S/S of tuberculosis?
- fever - cough ( often coughing up blood) - night sweats - weight loss * tuberculosis was almost extinct , but made a dramatic comeback
429
OSHA has adopted protective procedure standards for rescuers. What are some recommendations?
- wear a HEPA or N95 mask - perform artificial ventilation with OSHA approved equipment - wash your hands thoroughly - disinfect all non disposable equipment
430
What are the types of abdominal pain?
-visceral -parietal (also known as somatic pain) -referred pain
431
What is visceral pain?
When an abdominal organ is involved. Most organs do not have highly sensitive nerve fibers. Therefore , visceral pain is usually less severe and poorly localized. This type of pain is dull and aching , and can be constant or intermittent.
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What is parietal pain?
Also known somatic pain, is associated with the irritation of the peritoneoum lining. This lining has a larger number of highly sunsed nerve endings. Thus , you would expect pain to be more severe and more localized. This pain can be intense , found on one side, sharp and typically constant.
433
What is referred pain?
It is visceral pain, pain from an organ that is not felt in the organ itself but instead is felt elsewhere in the body. The pain is usually poorly localized, but is felt consistently in the part of the body it is referred to. Referred pain occurs when organ share a nerve pathway with a skin sensory nerve and the brain is confused and interprets the pain elsewhere.
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What is peritonitis?
Irritation and inflammation of the peritoneum. It occurs when blood, pus, bacteria or chemical substances leak into the peritoneal cavity.
435
What is the rebound tenderness test?
When the EMT would push slowly down on a quadrant of the abdomen to slightly compress the tissues beneath and then suddenly release the pressure. When the abdomen contents resume their original position, the peritoneal surfaces rub together. If there is inflammation to the peritoneal linings , it elicits pain, this technique , however , has fallen into disfavor because the patient with abdominal pain could be overdoing it or extremely frightening of someone pushing on his abdomen, and in either case, fail to be objective. *replaced by the markle test
436
What is the appendicitis?
Inflammation of the appendix that commonly causes an acute adomen, it is usually caused by a blockage and the intestines and results in inflammation and irritation. If left untreated , inflammation eventually causes the tissue to die and rupture
437
What is pancreatitis?
Inflammation of the pancreas that can cause severe pain in the middle of the upper quadrants. This abdominal pain sometimes radiates to mid to lower back. It can be triggered by a variety of causes including the ingestion of alcohol, gallstones or infection. complications that result from pancreatitis include absesses, sepsis, hemorrhage, tissue death, hypoglycemia, or hyperglycemia and organ failure.
438
What is cholecystitis?
Inflammation, the gallbladder. In some cases, the gallstones actually block the opening of the gallbladder to the small intestine. This blockage causes an increase in pressure inside the gallbladder, which causes distension and severe pain. Definitive care for this condition is hospitalization and sometimes surgical intervention to remove the gallbladder stones or blockage. * more common in females than males and frequently occurs between the ages of 30-50
439
What causes gastrointestinal bleeding?
Upper GI bleeding is frequently caused by peptic ulcers ,gastric erosion, and varices. Lower GI bleeding is caused by diverticulitis, arteriovenous malformations, or tumors. Upper=more common in men Lower=more common in gals
440
S/S of GI bleeding?
- hematemesis (vomiting blood) - hematochezia (red blood in the stool) - melena (dary stool) - AMS - tachycardia - pale, cool, and clammy skin -abdominal pain or tenderness
441
What are esophageal varices?
Bulging, engorgement or weakening of the blood vessels in the lining of the lower part of the esophagus. Common with heavy alcohol drinkers or patients with liver disease , it is caused by an increased pressure in the venous blood supply of the liver.
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S/S of esophageal varices?
- vomiting blood - ABSENCE of pain or tenderness - rapid pulse - difficulty breathing - pale, cool, Clammy skin - S/S of shock - jaundice
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What are ulcers?
Open wounds or sores within the digestive tract, they are associated with a breakdown of the lining that normally protects the intestines from the digestive fluids contained inside a digestive tract. This break down can cause damage to the stomach or intestines, and in some instances, massive bleeding.
444
S/S of ulcers?
- gradual onset of abdominal pain, normally , in the lower quadrant and epigastrous region and described as burning or gnawing - nausea and vomiting - hematesis (vomiting blood), hematochezia (blood in stool), and melena (dark stool) - S/S of shock - pertionitis
445
What is intestinal obstruction?
A blockage that interrupts normal flow of the intestinal contents within the intestines. Blockages occurring in the small intensive are usually the result of adhesions (the intestines sides sticking together), gallstones, or hernia. blockages of the large intestine are caused by tumors , adhesions , twisting of the bowel or fecal impaction
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S/S of intestinal blockage?
- abdominal pain - nausea and vomiting - obstipation (difficulty in passing stool) - abdominal distention and tenderness - abnormally prominent high pitched bowel sounds
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What is a hernia?
Protrusion or thrusting forward of a portion of intestine through an opening or weakness in the abdominal wall.
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S/S of a hernia?
- sudeen onset of abdominal pain - fever - rapid pulse - tender mass at point of hernia - other similar to intestinal obstruction
449
Abdominal aortic aneurysm vs aortic dissection?
AAA: Balloning and weakening of a the wall of the abdominal aorta AD: rupture or tear of the abdominal wall of the aorta
450
S/S of AAA?
- gradual onset of lower lumbar, groin , and abdominal pain - rupture associated with sudden onset of severe constant abdominal pain , which can radiate to the lower back , flank or pelvis - testicular pain in the male patient - molted or spotty abdominal skin - pale, cool, clammy and possibly cyanotic skin in the legs due to decreased perfusion - absent or decrease femoral or pedo pulses - if abdomen is soft, you may be able to feel a pulsating mass but if there is a rupture, the abdomen will be rigid and tender - if the AAA is starting to rupture, the skin below the waistline can become cyanotic, cold, and Mottled *DO NOT PALPLATE AN AAA PATIENT, IT CAN CAUSE RUPTURE
451
What is the emergency medical care for an acute abdomen?
1. Keep the airway patent. You might need to place patient in recovery positon to prepare for vomitus 2. Please the patient in position of comfort 3. Begin PPV if breathing is inadequate, 10-12 BPM 4. If breathing is adequate maintain oxygenation (greater than 94%) 5. Never give anything by mouth 6. Calm and reassure the patient 7. Treat for shock if S/S of hypoperfusion are present 8. Initiate a quick transport
452
What is dysmenorrhea?
Period pain. It is typically caused by hormonal imbalances or other conditions.
453
What is mittelschmerz?
When a patient experiences abdominal pelvic pain in the middle of her menstrual cycle , it is caused by irritation of the peritoneoum by the small amount of bleeding associated with the rupture of the ovarian tissue that occurs with the release of the mature ovum.
454
What is pelvic inflammatory disease?
An infection of the female reproductive track. pelvic infections are caused by bacteria, fungi or viruses. this condition is commonly spread during sex, but it can also spread from the result of a gyneological procedure insertion of A IUD device, childbirth or an abortion. *SEX SEX SEX JUST REMEMBER BE SAFE WITH YOUR SEXUAL ACTIVITES
455
S/S of a pelvic inflammatory diease?
- abdominal pelvic pain or tenderness - vaginal discharge with an abnormal color, consistency or odor - fever and chills - anorexia - naseua or vomiting - inrregular vagina bleeding or cramping - pain during intercourse
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What is renal calculi?
Also known as kidney stones, are crystals of substances such as calcium, uric acid, struvite, and crystine that are formed during metabolic abnormalities. Risk factors include family history, hyperparathyroids, recurrent UTI's, sedentary lifestyle, dehydration and obesity. Kidney stones are believed to originate in the kidneys and must pass through the rest of the urinary system to be eliminated. Severe pain can occur with this process, especially the Stone is large and passing through a ureter. if left untreated renal calculi can lead to loss of kidney function or kidney damage. the recurrence of kidney stones is common and can occur up to 50% of the patients who have had them.
457
S/S of kidney stones?
- abdominopelvic pain or tenderness - flank , or back pain that is colicky and severe - groin pain - abnormal urine color - pain with urination - frequent or urgent need to urinate - fever or chills - nausea or vomiting
458
What is dialysis?
An artificial process to remove water and waste substances from the blood when the kidneys fail to function properly.
459
What are the two major types of dialysis and describe them?
Hemodialysis: a dialysis machine containing the dialysate is connected to an access site on the patient. The access site can be a shunt, fistula, port or graft. The patient's blood is pumped through the access site and into the machine to have waste removed. The EMT should not take the blood pressure of a dialysis patient on the side of the patient's access site Peritoneal dialysis: The dialysate is run through a tube into the patient's abdomen. The fluid remains in the abdomen for several hours so that it could absorb the waste and then it is drained out of the body through a different tube. This is commonly performed at home and less common.
460
Emergency medical care for dialysis patients?
1. Maintain ABC's 2. Support ventilation as needed 3. Provide high concentration oxygen 4. Stop any bleeding from the shunt or access site 5. Position the patient. (In a shock patient, place them supine and in pulmonary edema, place them upright) 6. Transport
461
What are the predisposing factors for generalized hypothermia?
- ambiemt temperature, wind chill and moisture (winds can cause hypothermia in chill but not necessarily cold temperatures) - age (infants have a large surface area in relation to their overall size and cannot shiver. Both the young and old have less body fat. Elders have impairment of cold recognition, diminished basel metabolism, and poor constriction - medical conditions (surgery, shock, head injury, burns, infection, spinal cord injury, diabetes, thyroid gland disorder) - alcohol drugs and poisons - duration of exposure - clothing - level of activity
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What is the emergency medical care for generalized hypothermia? Hint: it follows three basic rules, prevent further heat loss, rewarming the patient, staying alert for complications
1. Remove the patient from the cold environment (remove any wet clothing and place blankets) 2. Handle the patient gently (rough handling can cause V-FIB ) 3. Maintain adequate oxygenation (94%+, use warm humfied O2 if possible and do not hyperventilate the patient, they have less need for O2 due to their reduced metabolism) 4. Begin CPR if the patient goes into cardiac arrest 5. Actively rewarm the patient. Only those with a body temp less than 34⁰ of 93.2⁰F and 15 minutes away from facility.(aggressively applying heat with heat packs under armpits, hot bottles in groin, using blankets, hot packs on the chest, and turning on the ambulance heater. HEAT SHOULD BE ADDED GRADUALLY. body temp should not be increased more than 1⁰ per hour. Do not apply heat the patient extremities. 6. Passively rewarm the patient. Mild hypothermia are those with a body temp greater than 34⁰ and or 93.2⁰F. Prevent further heat loss using balances and ambulance heater 7. Do not allow the patient to consume stimulants such as tobacco , coffee or alcohol 8. Never rub or massage , patients' arms or legs (you could force cold blood into the heart) 9. Transport (some protocols need you to transport to a facility with ExtraCorporeal Membrane Oxygenation (ECMO) capabilites.
463
What is heat strokes and what are the two types?
Heat stroke has a mortality rate of 21-63% and it occurs when the body's heat regulating mechanics breakdown and become unable to cool the body sufficiently.The body core temperature reaches extremely high temperatures, usually higher than 105⁰F or 40.5⁰ .Excessively high heat load on the body causes tissue damage and organ dysfunction and failure. Sweating ceases in half of the patients, ½. Nonexcertional: occurs typically to elderly patients with sedentary lifestyles , patients who are chronically ill or on medications , inhibiting the temperature ability of the body, or patients who live in the regions of the country that experience summer heat waves. Excertional: commonly occurs in younger and healthy individuals who are engaged in straining physical exertion in a hot environment for prolonged periods. Sweating is present in half the patients. * THE PATIENTS WITH HEAT STROKE MAY HAVE DRY OR MOIST SKIN.BECAUSE HALF OF THEM CAN'T SWEAT AND THE OTHER HALF CAN
464
What is heat exhaustion?
When the body has maximized the heat dissipating mechanisms to a point where other body systems are starting to dysfunction. it can produce a disturbance of the body's blood flow, resulting in a mild state of shock. This is brought on by the pulling of blood in the vessels, just below the skin, resulting from vasodilation as the body works to increase heat, but in extreme cases, this can also cause excessive blood flow away from major organs of the body. the patient's skin is normal to cool in temperature and either pale or ashen gray in color and sweaty
465
What does the American red cross suggest for an swimming incident when the patient has a spinal injury?
That the patient not be removed from water until a backboard or other rigid support can be applied to the patient for stabilization. If a backboard is not feasible such as in a swift moving water, remove the patient from the water and apply spine motion restriction after they are removed.
466
What is the pathophysiology of the decompression sickness?
It occurs as a result of the bubbles formed from the expansion of nitrogen in the blood and tissues described in Henry's law. The bubbles can cause cell damage and lead to organ dysfunction. The bubbles have 2 primary effects on the body. (1) they act as emboli and cause obstruction circulation and (2) they compress or stretch the blood vessels and nerves. Also , the bubbles can cause coagulation of the blood. In response, the vessels and surrounding tissue release substances as they would in an allergic reaction.