Efficacy of His Bundle Pacing on LV Relaxation and Clinical Improvement in HF and LBBB.

Objectives: This study aimed to compare acute hemodynamic improvements and responses to His bundle pacing (HBP) and conventional biventricular pacing (BVP).

Background: HBP can correct left bundle branch block (LBBB) and may be an alternative cardiac resynchronization therapy (CRT) to BVP.

Methods: Fourteen consecutive patients with heart failure (HF) and typical LBBB who required CRT were enrolled.