In a “normal” electrocardiogram (ECG), the transition of the QRS axis in the precordial leads occurs between leads V 3 and V 4 (i.e., there is a dominant S in V 3 and a dominant R in V 4).

There are only a few sinus rhythm QRS complexes available to examine on this ECG. Using lead V1 an incomplete right bundle branch block is seen. A prolonged QT interval is present that extends all ...

The Powerheart AED G3 Pro is designed for the professional rescuer with a color display screen, manual override, and 3-lead ECG monitoring capabilities. With semi-automatic operation, manual ...