When the SA node fails to generate an impulse or the rate of impulse generation falls below that of the AV node,the resulting rhythm is called a:
A) premature junction complex rhythm.
B) junctional atrial rhythm.
C) junctional tachycardia rhythm.
D) junctional escape rhythm.

Question

Quizplus · Accepted Answer

A junctional escape rhythm occurs when the SA node fails to generate an impulse or the rate of impulse generation falls below that of the AV node. This results in the AV node taking over as the primary pacemaker, producing a slower and less regular rhythm. Premature junction complex rhythm, junctional atrial rhythm, and junctional tachycardia rhythm all involve abnormal electrical activity in the atrioventricular junction, but they do not necessarily involve failure of the SA node.

When the SA Node Fails to Generate an Impulse or the Rate