Ventricular Paced Beat RBB Morphology C16, C23, R9  

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

Rhythm Strip
Ventricular Paced Beat RBB Morphology

Ventricular Paced (RBB morphology) 62 BPM
12 Lead EKG
Ventricular Paced (RBB morphology) 62 BPM