Exam 11: AV Blocks

AV dissociation is a hallmark of

In first-degree AV block,the site of the block is the

Third-degree AV block has

-In Figure 18,which of the heart's pacemakers is controlling the ventricle?

Wenckebach is characterized by

In first-degree AV block,________ sinus impulses get through to the ventricles.

All AV blocks involve a disturbance in conduction somewhere between the atria and the ventricles.

The origin of the P waves in AV blocks is the ________.

-Which strip is consistent with Mobitz II second-degree AV block?

The most dangerous of the AV blocks is Mobitz II second-degree AV block.

The type of heart block that involves a prolonged PR interval and no dropped beats is Mobitz II second-degree AV block.

-Which strip is consistent with third-degree AV block?

In third-degree AV block,only a few of the sinus impulses get through to the ventricles.

All AV blocks are caused by a block at the bundle branches.

Wenckebach is also known as ________.

-Which strip is consistent with Mobitz I second-degree AV block (Wenckebach)?

In first-degree AV block,all sinus impulses do get through to the ventricles.

In third-degree AV block,the site of the block is either the

Mobitz II second-degree AV block can progress to third-degree AV block if left untreated.

First-degree AV block is characterized by a prolonged QRS interval.