The heart block that causes "dropped" beats and that is often the result of increased parasympathetic tone is called _____ block.
A) Sinoatrial
B) Mobitz type I
C) First-degree atrioventricular
D) Left bundle branch

Question

Quizplus · Accepted Answer

Dropped beats are characteristic of second-degree atrioventricular blocks,which consist of Mobitz type I and Mobitz type II blocks.These dropped beats are a result of the atrioventricular node's inability to conduct impulses from the sinoatrial node.Sinoatrial blocks are indicated by a sudden loss of P waves.First-degree atrioventricular blocks are indicated by a prolongation of the P-R interval.Left bundle branch blocks are indicated by the absence of Q waves in the left limb leads.

The Heart Block That Causes "Dropped" Beats and That Is