Impact of Atrio-ventricular Optimization With His Bundle Pacing on Treatment of Atrio-ventricular Dromotropathy

A Select Secure 3830 (Medtronic, MN, USA) pacing lead will be placed on the bundle of His. In case of unsuccessful His capture, left bundle branch area pacing is going to be targeted. Pacemaker will be programmed to a low base rate and a high tracking rate to allow for intrinsic sinus rhythm. AV delay will be optimized with echocardiography to the shortest AV delay without truncation of the A wave on transmitral pulse wave doppler.

Pacemaker will be programmed to VVI (ventricular only) mode with low base rate as to allow for intrinsic sinus rhythm without AV optimization.