In which kind of AV block do NONE of the sinus impulses reach the ventricles?
A)First-degree AV block
B)Wenckebach
C)Mobitz II second-degree AV block
D)Third-degree AV block

Question

Quizplus · Accepted Answer

In third-degree AV block (also known as complete heart block), none of the sinus impulses reach the ventricles, resulting in complete dissociation between the atria and ventricles. In First-degree AV block, all impulses reach the ventricles but there is a delay in conduction. In Wenckebach, some of the impulses fail to reach the ventricles due to progressively lengthening conduction times, but eventually, a QRS complex appears. In Mobitz II second-degree AV block, some of the sinus impulses do not reach the ventricles, but there is no progressive prolongation of conduction time, and there is a fixed ratio of P waves to QRS complexes.

In Which Kind of AV Block Do NONE of the Sinus