Second-degree block is also known as:
A) Mobitz type 4.
B) Mobitz type 5.
C) Mobitz type 1.
D) Mobitz type 3.

Question

Quizplus · Accepted Answer

Second-degree block is divided into two types: Mobitz type 1 (also known as Wenckebach block) and Mobitz type 2. Mobitz type 1 is characterized by a progressive lengthening of the PR interval until a QRS complex is dropped, and it is the most common type of second-degree block. Mobitz types 4 and 5 do not exist, and Mobitz type 3 is equivalent to third-degree block.

Second-Degree Block Is Also Known As