The type of AV block characterized by a prolonged PR interval is
A)Wenckebach.
B)Mobitz II second-degree AV block.
C)third-degree AV block.
D)first-degree AV block.

Question

Quizplus · Accepted Answer

First-degree AV block is characterized by a prolonged PR interval, which means the time for the electrical impulse to travel from the atria to the ventricles is longer than normal. Wenckebach is a type of second-degree AV block where there is progressive prolongation of the PR interval until a QRS complex is dropped. Mobitz II second-degree AV block is characterized by sudden and unexpected dropped QRS complexes. Third-degree AV block is a complete block where there is no conduction between the atria and ventricles.

The Type of AV Block Characterized by a Prolonged PR