Top best answers to the question «What happens at the p wave of cardiac cycle»
- The P wave on the ECG represents atrial depolarization , which results in atrial contraction, or atrial systole . This article needs additional citations for verification.
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The electrical milestone event that occurs at the P wave of the cardiac cycle of the EKG is atrial depolarization. The upward stroke is right atrial depolarization, and the downward stroke is left atrial depolarization. Normally, this lasts for no more than 0.11 sec.