In Second Degree Heart Block (Type I and Type II),there is (are):
A)one P wave for every QRS complex.
B)more QRS complexes than P waves.
C)more P waves than QRS complexes.
D)no relationship between P waves and QRS complexes.

Question

Quizplus · Accepted Answer

In Second Degree Heart Block, Type I (Mobitz I/Wenckebach) and Type II (Mobitz II), there are more P waves than QRS complexes because some of the atrial impulses do not lead to ventricular contraction, resulting in dropped beats.