CLINICAL AND ELECTROPHYSIOLOGICAL OUTCOMES OF LEFT BUNDLE AREA PACING
COMPARED TO BI-VENTRICULAR PACING: AN UPDATED META-ANALYSIS
Abstract
The Left bundle branch area pacing (LBBAP) is a novel pacing strategy
that utilizes the conduction system distal to the left bundle branch
block level for direct activation of the left bundle and the right
ventricular myocardium. Our meta-analysis compared the structural,
electrophysiological, clinical, and procedural outcomes of LBBAP and
Bi-ventricular pacing (BVP). The meta-analysis included two randomized
control trials and showed significant reductions in left ventricular
systolic and diastolic volumes with LBBAP compared to BVP, along with a
statistically significant decrease in QRS duration, NYHA class, and
heart failure hospitalizations. Fluoroscopic time was also significantly
shorter in the LBBAP group. However, no significant change in LV
ejection fraction was noted. Although not statistically significant,
procedural complications were slightly higher in the LBBAP group. Our
findings suggest that LBBAP may be a superior alternative to standard
BVP in improving structural and electrophysiological components and
clinical components of cardiomyopathy, including NYHA class and heart
failure hospitalizations. LBBAP is a more physiological pacing strategy
that results in normal ventricular activation and may be a viable
alternative to BVP for cardiac synchronization therapy.