Intraprocedural transthoracic EChocardiography to facilitate Left Bundle Branch Pacing: EC-LBBP.

Background: Left bundle branch (LBB) pacing (LBBP) has gained rapid adoption. Evidence for direct LBB capture has varied from 30%-95% depending on the criteria.

Objective: The purpose of this study was to assess the feasibility and efficacy of intraprocedural transthoracic echocardiographic guidance to achieve LBB capture.