Sinus Node Arrythmias

Question 1

What are all rhythms judged off?

Answer 1

NSR (normal sinus rhythm)

Question 2

What does NSR represent?

Answer 2

normal electrical pathway.

Question 3

The atrial and ventricular rhythm in NSR should be ____________?

Answer 3

regular

Question 4

What is SA?

Answer 4

a rhythm that originates in the right atrium that is irregular.

Question 5

What are some signs that a patient has a sinus arryhtmia?

Answer 5

• no symptoms usually
• underlying conditions
• dizziness or syncope

Question 6

What causes SA?

Answer 6

• inferior wall MI
• inspiration/expiration
• Digoxin and Morphine
• increased intracranial pressure (head injury)

Question 7

How is SA treated?

Answer 7

medication or treat the underlying cause.

Question 8

In SA what happens to the P-P & R-R intervals during inspiration and expiration?

Answer 8

• inspiration the intervals are shorter
• expiration the intervals are larger

Question 9

T/F: Below is a list on how to identify Sinus Arrythmia. There are possibly no symptoms.

Answer 9

True

Question 10

T/F: Below is a list on how to identify Sinus Arrythmia. There may be an increased peripheral pulse rate during inspiration.

Answer 10

True

Question 11

T/F: Below is a list on how to identify Sinus Arrythmia. There may be an increased pulse rate during expiration.

Answer 11

False; decreased

Question 12

T/F: Below is a list on how to identify Sinus Arrythmia. There may be possible disappearance of arrythmia when HR increases. e.g. exercise.

Answer 12

True

Question 13

T/F: Below is a list on how to identify Sinus Arrythmia. Patient may present with an underlying condition.

Answer 13

True

Question 14

T/F: Below is a list on how to identify Sinus Arrythmia. Patient may present with syncope or dizziness.

Answer 14

True

Question 15

What are four potential reasons a patient would be in sinus bradycardia?

Answer 15

• cardiomyopathies (dilated cardiomyopathy, hypertrophic, restrictive)
• inferior wall MI
• myocardial ischemia (tissue death)
• heart blocks

Question 16

T/F: Treatment is still necessary on patient with sinus bradycardia even if they are asymptomatic.

Answer 16

False

Question 17

What is the difference between sinus rhythm and sinus tachycardia?

Answer 17

NSR: 60-100
ST: 101+

Question 18

What are four diagnoses or factors that causes sinus tachycardia?

Answer 18

• drugs
• triggers
• cardiogenic shock
• hemorrhage
• pericarditis
• heart failure
• PE
• respiratory distress
• normal responses

Question 19

How can you observe a patient in sinus tachy?

Answer 19

• rate
• no symptoms
• decreased cardiac output
• anxiety
• angina
• hypotension
• blurred vision
• nervousness
• palpitations