LOCAlizaTion and clinical corrElation of Left Bundle Branch Pacing lead: Insights from a computed tomographic angiography (LOCATE LBBP) study.

Background: Left bundle branch pacing (LBBP) provides physiological activation with stable pacing parameters. However, there is a paucity of data on direct assessment of lead stability.

Objectives: The purpose of this study was to assess the stability of an LBBP lead using computed tomographic angiography (CTA) during medium-term follow-up and to correlate the anatomic location of the lead and electrophysiological characteristics of LBBP.

Electrophysiologic characteristics and clinical correlation of right ventricular activation during left bundle branch area pacing (RV-LBBAP study).

Background: Left bundle branch area pacing (LBBAP) results in a right bundle branch (RBB) delay pattern because of preexcitation of the left bundle. The mechanism of right ventricular (RV) activation during LBBAP is largely unknown.

Objective: The aim of the study was to analyze the electrophysiologic characteristics of RV activation by mapping the RBB during LBBAP and its clinical correlation.