In an electrocardiogram (ECG) pattern, the P-Q interval indicates how long it takes for the cardiac impulse to travel between what two places?
A) Sinatrial (SA) node to the atrial muscle fibers
B) Sinoatrial (SA) node through the atrioventricular (AV) node
C) Atrioventricular (AV) node to the atrial muscle fibers
D) Atrioventricular (AV) node to the ventricular muscle fibers
E) Sinoatrial (SA) node to the ventricular muscle fibers

Question

Quizplus · Accepted Answer

The P-Q interval (also known as the PR interval) on an ECG represents the time it takes for the electrical impulse to travel from the sinoatrial (SA) node through the atrioventricular (AV) node. This includes the propagation of the impulse across the atria, the delay in the AV node, and the initial portion of the impulse's travel through the bundle of His and bundle branches toward the ventricles.

In an Electrocardiogram (ECG) Pattern, the P-Q Interval Indicates How