Which Dysrhythmia Causes a P Prime Wave on the ECG

Question

Which dysrhythmia causes a P prime wave on the ECG?
A) PAC
B) sinus block
C) PVC
D) sinus arrest

Accepted Answer

PAC (Premature Atrial Contraction) is characterized by the presence of a P prime (P') wave on the ECG, which represents an early electrical impulse originating from an ectopic focus within the atria, not the sinoatrial node. This results in a premature and differently shaped P wave compared to the normal sinus P waves.