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.