Bundle branch block rhythm is similar to a sinus rhythm but has what distinguishing characteristic?
A)PR interval greater than 0.20 seconds
B)QRS duration less than 0.12 seconds
C)PR interval less than 0.12 seconds
D)QRS duration greater than 0.12 seconds

Question

Quizplus · Accepted Answer

Bundle branch block rhythm has a QRS duration greater than 0.12 seconds due to delayed ventricular activation caused by blockage in one of the bundle branches. The PR interval is typically within normal limits.

Bundle Branch Block Rhythm Is Similar to a Sinus Rhythm