Which statement best describes the morphology of the P waves in second-degree AV block, Mobitz type II?
A)The P waves are normal in size and shape, and the number of P waves equals the number of QRS complexes.
B)The P waves are normal in size and shape, and there is at least one P wave for every QRS complex.
C)The P waves are inverted, and the number of P waves equals the number of QRS complexes.
D)The P waves are normal in size and shape, and there is no association between the P waves and the QRS complexes.

Question

Quizplus · Accepted Answer

In second-degree AV block, Mobitz type II, the P waves are normal in size and shape, but there is a ratio of more than one P wave per QRS complex. This means that some P waves are not conducted to the ventricles. Option A incorrectly states that the number of P waves equals the number of QRS complexes. Option C incorrectly states that the P waves are inverted. Option D incorrectly states that there is no association between the P waves and QRS complexes.

Which Statement Best Describes the Morphology of the P Waves