This is a narrow complex tachycardia with a rate of 124 beats/min. The QRS morphology and axis are normal. The QTc is prolonged, at 529 ms (normal, 390-450 ms for men). The underlying P waves appear ...

The correct diagnosis is sinus rhythm, premature ventricular complexes, and echo complexes (Figure 2). The rhythm is irregular but has a repeating pattern of group beating, with three QRS complexes ...

Department of Medical-Diagnostic Sciences, University of Padua, Padua, Italy Correspondence to Dr D Corrado, Department of Cardiac, Thoracic and Vascular Sciences, University of Padua Medical School, ...

An electrocardiogram (Fig. 1) of the Case Records of the Massachusetts General Hospital (in the September 18 issue) needs a few comments or corrections. First of all, the entire tracing in Figure 1 is ...

A junctional rhythm occurs when the electrical activation of the heart originates near or within the atrioventricular node, rather than from the sinoatrial node. Because the normal ventricular ...