How would the nurse differentiate between the two types of second-degree heart block?

Question

Quizplus · Accepted Answer

Second-degree heart block can be type I (Mobitz I/Wenckebach) or type II (Mobitz II). The main way to differentiate between the two types is by assessing the PR intervals. Type I second-degree heart block (Mobitz I/Wenckebach) will have progressively lengthening PR intervals until a beat is dropped, whereas type II second-degree heart block (Mobitz II) will have a consistent PR interval with intermittent dropped beats. Assessing the QT interval, ventricular rate, and configuration of the P wave are not helpful in differentiating between the two types of second-degree heart block.

How Would the Nurse Differentiate Between the Two Types of Second-Degree