Sinus bradycardia occurs on an ECG when there is a normal upright P wave in lead II ― sinus P wave ― preceding every QRS complex with a ventricular rate of less than 60 beats per minute.

In addition to detecting Atrial Fibrillation (AFib) and Normal Sinus Rhythm, AliveCor, starting today, is able to detect and show ECG results for Bradycardia and Tachycardia. These instant ...