Figure 2: LBBP and AVJ ablation. A – PVCs with changing morphology during lead rotation. B- LBB paced QRS mimicked VES2 with duration of 124ms and pLVAT 65ms. C- Pacing lead electrogram (LBB) showing sharp LBB potentials (LB Po) preceding the local ventricular electrogram. D – Non selective (first 2 beats) to selective (last 2 beats) capture of LBB. His d and p – His distal and proximal electrogram, LBB and LBU – Pacing lead electrogram bipolar and unipolar, RVA – right ventricular electrogram, His Po – His bundle potential