Chapter 7 Test

Question 1

Lead l

Answer 1

record the action between the LA and RA. The positive electrode of this lead is on the left shoulder and visualizes the left lateral surface of the heart.

Question 2

Lead ll

Answer 2

Records between the RA and LL. The positive left torso, just below the rib cage. Lead ll activity on the left anterior and apical surfaces of the heart.

Question 3

Lead lll

Answer 3

record potential between the LT arm and LT chest. Although positive of the lead is still on the LT torso, this lead activity on the inferior surface of the heart.

Question 4

Lead AvL (LA)

Answer 4

visualizes the heart from the pov of the left shoulder and visualize looking at the left side of the heart.

Question 5

LEAD AVR (LL)

Answer 5

visualize the heart from the pov of the right shoulder primarily looking at the cavity of the heart.

Question 6

V1

Answer 6

located over the 4th intercostal space right of the sternal border and looks specifically at the right bundle branch system.

Question 7

V2

Answer 7

located in the 4th intercostal space to the left of the sternal border and looks right anterior surface of the heart.

Question 8

V3

Answer 8

located between V2 and V4 and looks at the right anterior septal surface.

Question 9

V4

Answer 9

located at the 5 intercostal space midclavicular line and looks at the left anterior surface of the heart.

Question 10

V5

Answer 10

located at the 5th intercostal space on the anterior axillary line and looks at the left ventricle

Question 11

V6

Answer 11

located at the 5th intercostal space on the mid axillary line and looks at the lateral surface of the heart.

Question 12

Somatic tremor

Answer 12

artifact makes a fine choppy distortion on the EKG tracing.

Question 13

Ways to reduce somatic tremor

Answer 13

: Patients who have Parkinson’s disease or other conditions that cause tremors can be positioned with their hands under their butt.
Placing limb electrodes on the torso, rather than on the limbs, may also help.
Patients who are shivering should be given a blanket. The room temp should be adjusted if possible.
Anxious or nervous patients should be reassured that the test is painless/

Question 14

Wandering baseline

Answer 14

EKG is the straight horizontal line that is supposed to appear between the up and down movement that trace electrical activity. In wandering, it goes up and down across the tracing.

Question 15

Abrading

Answer 15

the outer layer of dead skin cells can be removed by gently rubbing. This lets the electrode gel come in contact with more conductive tissue.

Question 16

Electrical interference

Answer 16

called artifacts and broken recording can be caused by factors in the care environment.

Question 17

Electrical interference

Answer 17

is called a alternating current (AC) interference or 60 cycle interference

Question 18

Broken recording

Answer 18

occurs when EKG machine cannot find a signal. The stylus goes from side to side as the machine searches for a signal.

Question 19

Causes and Solutions of Somatic Tremor

Answer 19

Patient is cold
Patient is experiencing a seizure
Patient is experiencing tremor due to Parkinsons disease
Patient is anxious

Increase room temp, offer blanket
Turn down lights and provide quiet environment; delay EKG until tissue is over
Have patient place hands, palms up under butt
And encourage slow breaths

Question 20

Causes and Solution of Wandering Baseline

Answer 20

Patient’s breathing is creating interference due to muscle movement
Patients body hair is preventing skin electrode contact
Natural skin oils or grooming products are interfering with skin-electrode contact
Electrode gel is dried out
Lead wires are tight or stretched
Patients is thin

Encourage slow breaths; donot position limb lead electrodes on torso
Remove body hair using medical clippers or razor
Remove with soap and water and throughly dryskin
Discard dry electrodes; store electrodes in airtight containers
Place machine close to patient and avoid movement of wires during recording
Place electrodes away from bony areas
Move electrical equipment or turn off possible
Turn off lights
Move machine to another location in the room

Question 21

Replorization

Answer 21

a change in electrical charge from positive back to negative. Causes the heart muscle to relax.

Question 22

Deplorization

Answer 22

change in electrical change from negative to positive. It quickly spreads to the next cell and throughout the heart.

Question 23

Bipolar leads

Answer 23

placed on the limbs, recording electrical activity on the frontal plane.

Question 24

Septal

Answer 24

V1, V2

Question 25

Anterior

Answer 25

V3, V4

Question 26

Lateral

Answer 26

V5,V6, I, AVL

Question 27

Inferior

Answer 27

LL, lll, AVF

Question 28

Scar tissue

Answer 28

The EKG technician should not place electrodes on scar tissue from a mastectomy or other chest wall surgery.

Question 29

Dextrocardia

Answer 29

is a rare heart condition, It causes heart to point to the right side of the chest rather than the left side. The chest electrodes must be placed over the heart on the right side of the chest.

Question 30

Limbs amputation

Answer 30

Limb electrode placement must be changed for patients with limb amputations. The electrodes may be placed on the torso as close as possible to the amputated limb. They can be placed on the limb itself but closer to the torso. The electrode for the unaffected limb should be placed in a mirror image position.

Question 31

Medical implants

Answer 31

electrodes should not be placed over implanted medical equip such as pacemaker, breast implants. The electrodes should be placed to the side of the implant.

Question 32

Large breats

Answer 32

if a patient has large breasts, the breast tissue should be moved away from the electrical site as much as possible.

Question 33

Pediatric patients

Answer 33

electrodes placement is different for some pediatric patients. Children under 2 require a right side EKG the same electrodes placement used. For children from 2-12, the standard 12 lead electrodes placement is used for all electrodes except for V4. The V4 is moved to the right side of the chest at the 5th intercostal space at the midclavicular line. it's called V4R.

Question 34

Posterior

Answer 34

backside

Question 35

An EKG technician is performing posterior 12-lead EKG for a patient. Which of the following leads should the technician place along the paraspinous border?

Answer 35

Lead V9

Question 36

An EKG technician is preparing to perform an exercise stress test on a patient. Which of the following findings in a patient's medical history would prevent the patient from participating in an exercise stress test?

Answer 36

Congestive heart failure

Question 37

An EKG technician should recognize that which of the following situations would result in wandering baseline artifact on an EKG tracing?

Answer 37

Loose electrodes

Question 38

An EKG technician is performing an exercise stress test for a patient. For which of the following findings should the technician expect the provider to stop the test.

Answer 38

Dizziness

Question 39

An EKG technician should recognize that a rhythm strip should be at least how many seconds long to accurately identify rate and rhythm?

Answer 39

6 seconds

Question 40

An EKG technician in an outpatient facility is obtaining a patient's vital signs and is having trouble visualizing the patient's chest movement. Which of the following actions should the technician take to obtain an accurate respiratory rate for the patient?

Answer 40

Place a hand on the middle of the patient's back to count the respirations

Question 41

An EKG technician has just provided patient education prior to an exercise stress test. Which of the following statements made by the patient indicates an understanding of the preparation?

Answer 41

"I can smoke before the exam"

Question 42

Loss of Capture

Answer 42

Loss of capture occurs when pacemaker spikes appear on the patient's EKG tracing but are not followed by the appropriate waveforms.

Question 43

An EKG technician notices an accelerated idioventricular rhythm on a tracing. Which of the following actions should the technician take next?

Answer 43

Call for help and stay with the patient

Question 44

Which of the following intervals should be used to determine the regularity of ventricular depolarization?

Answer 44

R-R wave interval

Question 45

Which of the following actions should the EKG technician take to resolve a wandering baseline on a patient's EKG tracing?

Answer 45

Relieve tension from the lead wires

Question 46

Which of the following waves should an EKG technician measure to evaluate for atrial depolarization?

Answer 46

P wave

Question 47

An EKG technician is preparing a patient for an exercise stress test. Which of the following leads should the technician place on the right lower side of the anterior torso?

Answer 47

Lead RL

Question 48

P waves

Answer 48

atrial depolarization

Question 49

T waves

Answer 49

ventricular repolarization

Question 50

QRS complex

Answer 50

ventricular depolarization

Question 51

Lead l

Answer 51

Right arm to left arm.

Question 52

Lead ll

Answer 52

Right arm to left leg.

Question 53

Lead III

Answer 53

left arm to left leg.

Question 54

left leg

Answer 54

Left leg is positive electrode

Question 55

Left arm

Answer 55

Left arm is positive electrode

Question 56

AVR

Answer 56

On right arm

Question 57

AVL

Answer 57

On left arm

Question 58

AVF

Answer 58

On left foot