A 76-year-old woman presents with a persistently rapid heart rate that she attributes to her pacemaker. What does the ECG show?

Technically, the diagnosis of an anterior myocardial infarction on an ECG has never been validated in the setting of a paced rhythm, however that was the case in this ECG. There was acute ...

Therefore, a "biventricular pacemaker" has been developed placing a second lead into the coronary sinus around the back of the heart which can pace the left ventricle as well. The ECG of a ...

Ladder diagram example explaining the postulated mechanisms for the EKG findings seen in Figure1. In this case the burst is limited to 10 atrial-paced beat. A = atrium; AVN = AV nodal; HB = His ...