What is the background of absence of P wave in Atrial Fibrillation

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Atrial fibrillation is the most common chronic arrhythmia, characterized by erratic atrial electrical activity with atrial rates of 400 to 600 beats per minute. The P wave is absent on the surface electrocardiogram and can, at times, be replaced with “fibrillatory waves.”
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P wave represents atrial contraction in In ECG. In Atrial fibrillation, normal atrial contraction is replaced by fibrillatory waves, which are electrically and mechanically weak and no P wave is produced. But atrial fibrillatory wave can be seen in V1 .
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Low in amplitude so not visible on ECG it turn in to fibrillater wave in atrial fibrillation
Because of fvr the p waves of atria are masked
Yes p is masked in AF
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