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 ...

Figure 1. Courtesy of Philip J. Podrid, MD. The correct diagnosis is atrial arrhythmia with 2:1 biventricular ventricular pacing (Figure 2). Figure 2. Courtesy of Philip J. Podrid, MD. The rhythm ...

This ECG has ventricular pacing as seen by pacemaker spikes prior to each QRS complex, however has a more right bundle branch appearance. This is a biventricular pacemaker which has one lead in ...