A single beat that arises from a focus outside of the SA node is called an):
A)Atrial Tachycardia.
B)ectopic beat.
C)compensatory pause.
D)Premature Ventricular Complex.

Question

Quizplus · Accepted Answer

An ectopic beat is a single electrical impulse that arises from a focus outside of the SA node, which can cause an irregular heart rhythm. Atrial tachycardia involves a faster than normal heart rate originating in the atria. A compensatory pause occurs after a premature beat, where the heart pauses slightly longer than normal to allow time for the next normal beat to occur. A premature ventricular complex is an early heartbeat that originates from a ventricle instead of the SA node.

A Single Beat That Arises from a Focus Outside of the SA