What does the PR interval viewed on a normal electrocardiogram represent?
A) Atrial depolarization
B) Ventricular depolarization
C) The onset of atrial activation to onset of ventricular activity
D) The "electrical systole" of the ventricles

Question

Quizplus · Accepted Answer

The PR interval represents the time from the onset of atrial depolarization (beginning of the P wave) to the onset of ventricular depolarization (beginning of the QRS complex), indicating the time taken for electrical impulse to travel from the atria to the ventricles.

What Does the PR Interval Viewed on a Normal Electrocardiogram