Question 1

The most common cause of an unexplained pause is a ________.

Accepted Answer

The answer of The most common cause of an unexplained...

Question 2

An ectopic rhythm is one which originates in a location other than the sinus node.

Accepted Answer

A) True 
 B)False

Question 3

In atrial flutter,the flutter waves are regular.

Accepted Answer

A) True 
 B)False

Question 4

In atrial fibrillation of less than 48 hours duration,anticoagulant therapy is indicated before attempting to convert the rhythm back to sinus rhythm.

Accepted Answer

A) True 
 B)False

Question 5

Atrial fibrillation is an ectopic rhythm.

Accepted Answer

A) True 
 B)False

Question 6

The atrial rate in paroxysmal atrial tachycardia is ________.

Accepted Answer

The answer of The atrial rate in paroxysmal atrial tachycardia...

Question 7

Multifocal atrial tachycardia is an irregular rhythm with a heart rate greater than 100.

Accepted Answer

A) True 
 B)False

Question 8

Atrial tachycardia is always accompanied by symptoms of decreased cardiac output.

Accepted Answer

A) True 
 B)False

Question 9

Atrial fibrillation can cause a drop in cardiac output because it causes

Accepted Answer

A) a loss of the atrial kick. 
B) the ventricles to contract more forcefully. 
C) the AV valves to remain open too long. 
D) the sinus node to fire more often.

Question 10

Which of these statements about how sinus arrhythmia differs from wandering atrial pacemaker is TRUE?

Accepted Answer

A) Sinus arrhythmia has uniform P wave shapes; wandering atrial pacemaker has at least three different shaped P waves. 
B) Sinus arrhythmia has a regular rhythm; wandering atrial pacemaker is irregular. 
C) Sinus arrhythmia has a heart rate of less than 100; wandering atrial pacemaker has a rate greater than 100. 
D) Sinus arrhythmia is lethal; wandering atrial pacemaker is benign.

Question 11

The rhythm in Figure 7 is

Accepted Answer

A) sinus rhythm with a sinus arrest and a junctional escape beat. 
B) sinus arrhythmia. 
C) sinus rhythm with a nonconducted PAC. 
D) wandering atrial pacemaker.

Question 12

A regular rhythm with narrow QRS complexes,indistinguishable P waves,and a heart rate of 155 would be consistent with

Accepted Answer

A) atrial fibrillation. 
B) supraventricular tachycardia. 
C) sinus bradycardia. 
D) ventricular tachycardia.

Question 13

The difference between wandering atrial pacemaker and multifocal atrial tachycardia is

Accepted Answer

A) wandering atrial pacemaker has a faster heart rate. 
B) multifocal atrial tachycardia has a faster heart rate. 
C) wandering atrial pacemaker has uniform shape P waves; multifocal atrial tachycardia has P waves of at least three different shapes. 
D) wandering atrial pacemaker has only two different shape P waves; multifocal atrial tachycardia has at least five different shaped P waves.

Question 14

Multifocal atrial tachycardia is the same rhythm as ________,but with a faster heart rate.

Accepted Answer

The answer of Multifocal atrial tachycardia is the same rhythm...

Question 15

Atrial flutter has an atrial rate

Accepted Answer

A) between 60 and 100. 
B) greater than 100. 
C) between 40 and 60. 
D) between 250 and 350.

Question 16

Frequent PACs can be a sign of impending

Accepted Answer

A) heart failure. 
B) sinus arrest. 
C) respiratory failure. 
D) cardiac arrest.

Question 17

Flutter waves are often described as sawtooth- or picket-fence-shaped waves.

Accepted Answer

A) True 
 B)False

Question 18

A PAC often deforms the shape of the

Accepted Answer

A) QRS. 
B) preceding T wave. 
C) preceding U wave. 
D) following T wave.

Question 19

In SVT,the heart rate must be greater than 180.

Accepted Answer

A) True 
 B)False

Question 20

Atrial fibrillation is routinely a reason to begin CPR.

Accepted Answer

A) True 
 B)False

Exam 8: Rhythms Originating in the Atria

The most common cause of an unexplained pause is a ________.

An ectopic rhythm is one which originates in a location other than the sinus node.

In atrial flutter,the flutter waves are regular.

In atrial fibrillation of less than 48 hours duration,anticoagulant therapy is indicated before attempting to convert the rhythm back to sinus rhythm.

Atrial fibrillation is an ectopic rhythm.

The atrial rate in paroxysmal atrial tachycardia is ________.

Multifocal atrial tachycardia is an irregular rhythm with a heart rate greater than 100.

Atrial tachycardia is always accompanied by symptoms of decreased cardiac output.

Atrial fibrillation can cause a drop in cardiac output because it causes

Which of these statements about how sinus arrhythmia differs from wandering atrial pacemaker is TRUE?

The rhythm in Figure 7 is

A regular rhythm with narrow QRS complexes,indistinguishable P waves,and a heart rate of 155 would be consistent with

The difference between wandering atrial pacemaker and multifocal atrial tachycardia is

Multifocal atrial tachycardia is the same rhythm as ________,but with a faster heart rate.

Atrial flutter has an atrial rate

Frequent PACs can be a sign of impending

Flutter waves are often described as sawtooth- or picket-fence-shaped waves.

A PAC often deforms the shape of the

In SVT,the heart rate must be greater than 180.

Atrial fibrillation is routinely a reason to begin CPR.