In a pacemaker ECG, if a spike appears by itself with no P wave and no QRS complex, it is called a(n) ____________.
A) Over sensing
B) Loss of capture
C) Failure to pace
D) Under sensing

Question

Quizplus · Accepted Answer

Loss of capture occurs when the pacemaker generates an electrical impulse, but it does not result in myocardial depolarization, hence no P wave or QRS complex follows the spike.

In a Pacemaker ECG, If a Spike Appears by Itself