Pathophysiology
         
Ventricular Paced Beat LBB Morphology    

A pacemaker lead wire placed in the right ventricle produces a left bundle branch morphology on the ECG.

Rhythm Strip
Ventricular Paced Beat LBB Morphology

Demand Ventricular Pacemaker Rhythm (LBB Morphology at 40 BPM) following VEB

12 Lead EKG
Ventricular Paced Beat LBB Morphology