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 ...

LONDON, UK — In a population of 2167 men free of major CHD events at baseline, T-wave abnormalities may be significantly predictive of sudden coronary death independently of other risk factors, ...

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, ...

As always, this is a challenge to see if this wide-complex tachycardia is ventricular tachycardia or "SVT with aberrancy". There is indeed AV dissociation present best seen in lead V2 on this ECG ...