When would you use the mnemonic "Lengthen, lengthen, drop equals Wenckebach"?
A)To differentiate second-degree heart block from third-degree heart block
B)To differentiate first-degree heart block from left bundle branch block
C)To differentiate second-degree Mobitz type I heart block from Mobitz type II heart block
D)To differentiate first-degree heart block from third-degree heart block

Question

Quizplus · Accepted Answer

The mnemonic "Lengthen, lengthen, drop equals Wenckebach" is commonly used to differentiate between second-degree Mobitz type I (also known as Wenckebach) and Mobitz type II heart block. It refers to the progressive lengthening of the PR interval until a dropped beat occurs in Mobitz type I.

When Would You Use the Mnemonic "Lengthen, Lengthen, Drop Equals