A 78-year-old man with a history of heart failure presents for routine follow-up 1 week after insertion of a pacemaker. As part of the evaluation, a 12-lead ECG is obtained. The correct diagnosis is ...

The rhythm is regular at a rate of 120 beats/min. A pacemaker stimulus occurs before each QRS complex (→). This is ventricular pacing. Because the pacing rate is 120 beats/min, the mode of pacing must ...

You must have heard of pacemakers? They are required when the heart's natural system malfunctions, causing it to beat too ...

If the ventricular pacing is originating in the right ventricle like a normal pacemaker, a left bundle branch morphology will be present. This occurs since the right ventricle is activated first and ...

If the ventricular pacing is originating in the right ventricle like a normal pacemaker, a left bundle branch morphology will be present. This occurs since the right ventricle is activated first and ...

The nitric oxide-independent soluble guanylate cyclase activator ataciguat continued to show promise for slowing the progression of fibrocalcific aortic valve stenosis in phase I and II studies.

If someone’s experiencing ongoing chest pain or other symptoms such as shortness of breath, an electrocardiogram will likely be a test your doctor orders. The electrocardiogram, also called an EKG or ...