This ECG shows sinus bradycardia at 55 beats per minute with a prolonged PR interval, about 0.24 sec, consistent with first-degree atrioventricular block. The QRS duration is top normal at 0.12 sec ...
The rhythm is regular at a rate of 78 beats/min. Before each QRS complex, there are two pacing stimuli (+,v) with a very short interval (0.06 sec) between them. They are both ventricular pacing ...
1 Department of Family Medicine, University of Washington, Seattle, Washington, USA 2 Department of Pediatrics, Emory University School of Medicine, Children's Healthcare of Atlanta, Atlanta, Georgia, ...
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