A member asked:

How come there is no p wave in ventricular fibrillation?

2 doctors weighed in across 2 answers

P waves are atrial: "p" wave are a finding on the ECG (electrocardiogram) which represents atrial contraction. During ventricular fibrillation there is no organized atrial activity and therefore there will be no P wave generated.

Answered 2/18/2015

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ECG : There may actually be a P wave in some vfib. You won't see it because of the vfib waves.

Answered 2/18/2015

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