Sinus Rhythms

Question 1

Sinus rhythms originate in the

Answer 1

SA node

Question 2

What characterizes a sinus rhythm

Answer 2

All P waves are identical and all the PR intervals are the same

Question 3

Sinus Brady may be distinguished by

Answer 3

-Identical P waves
-Constant PR interval
-Rate less than 60

Question 4

Sinus Rhythm is characterized by

Answer 4

-Identical P waves
-Constant PR interval
-Rate of 60-100

Question 5

Sinus tachycardia is distinguished by

Answer 5

-Identical P waves
-Constant PR interval
-Rate of greater than 100

Question 6

Sinus arrhythmia is characterized by

Answer 6

-Identical P waves
-Constant PR interval
-Irregular rate

Question 7

A sinus arrhythmia has P-P intervals of

Answer 7

0.16 seconds or greater difference

Question 8

What are the two types of sinus arrhythmia

Answer 8

-Respiratory/Phasic
-Non-phasic/Non-respiratory

Question 9

What are the dangers of bradycardia?

Answer 9

May cause low cardiac output, hypotension, angina, CNS symptoms

Question 10

What are electrical alternans

Answer 10

Repeating patterns of QRS amplitude

Question 11

What is the difference between an SA block and an SA pause

Answer 11

A block marches on, a pause does not

Question 12

A sinus arrest can be determined as

Answer 12

A pause that lasts the duration of at least 3 P-P intervals