If an ECG indicated no P wave, a possible explanation would be
A) damage to the SA node.
B) damage to the AV node.
C) damage to ventricular muscle.
D) excessive vagus nerve stimulation.
E) ectopic beats in the ventricles.

Question

Quizplus · Accepted Answer

The P wave on an ECG represents atrial depolarization, which is initiated by the SA node. If there is no P wave present, it is likely that the SA node is not functioning properly, possibly due to damage or dysfunction.

If an ECG Indicated No P Wave, a Possible Explanation