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Single lead electrocardiogram (ECG) showing sinus bradycardia

Single lead electrocardiogram (ECG) showing sinus bradycardia
Marked sinus bradycardia at a rate of 25 to 30 beats/min. The normal P waves (upright in lead II) and PR interval are consistent with a sinus mechanism with normal atrioventricular (AV) conduction.
Courtesy of Ary Goldberger, MD.
Graphic 52675 Version 4.0
Normal rhythm strip
Normal rhythm strip in lead II. The PR interval is 0.15 sec and the QRS duration is 0.08 sec. Both the P and T waves are upright.
Courtesy of Morton F Arnsdorf, MD.
Graphic 59022 Version 3.0