The most diagnostic feature of Wenckebach is:
A)there are always 2 P waves for every QRS complex.
B)the PRI is consistently regular.
C)both atrial and ventricular rates are regular.
D)the PRIs get progressively longer until one is dropped.

Question

Quizplus · Accepted Answer

The most diagnostic feature of Wenckebach is the progressive lengthening of the PR intervals until a beat is dropped. Choices A and B are incorrect because Wenckebach does not involve a consistent number of P waves for every QRS complex or a consistently regular PRI. Choice C is also incorrect because the atrial rate may not necessarily be regular as it can vary depending on the underlying rhythm.

The Most Diagnostic Feature of Wenckebach Is