Atrial fibrillation (AF) is the most common arrhythmia that requires medical attention. Patients with significant symptoms related to AF may benefit from efforts to restore and maintain normal sinus ...
The PR interval is the time from the beginning of the P wave (atrial depolarization) to the beginning of the QRS complex (ventricular depolarization). The normal PR interval measures 0.12-0.20 seconds ...
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