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Uptodate Reference Title
ECG atrial fibrillation
ECG atrial fibrillation
Atrial fibrillation. 12-lead ECG shows an irregularly irregular rhythm. Discrete P waves are not seen, and there is fibrillatory atrial activity, best seen in lead V1. The average heart rate is 102 bpm, with a normal axis, QRS duration, and QTc interval, and with nonspecific ST-T changes.