The total duration of ventricular depolarization is represented by the ________ on the ECG.
A) QRS duration
B) QT interval
C) PQ interval
D) R-R interval

Question

Quizplus · Accepted Answer

The QT interval represents the total duration of ventricular depolarization, including both the QRS complex and the subsequent repolarization. Option A, the QRS duration, only represents the time it takes for ventricular depolarization to occur. Option C, the PQ interval, represents the time it takes for the electrical signal to travel from the SA node to the ventricles. Option D, the R-R interval, represents the time between consecutive ventricular depolarizations.

The Total Duration of Ventricular Depolarization Is Represented by the ________