Heart failure & cardiomyopathies

Sex Differences in Left Bundle Branch Area Pacing Versus Biventricular Pacing for Cardiac Resynchronization Therapy

JACC Clin ElectrophysiolPublished Prospective registry study

Authors' conclusion

Men and women undergoing LBBAP for CRT had similar clinical outcomes. Men undergoing LBBAP showed a lower risk of heart failure-related hospitalizations and all-cause mortality compared to men undergoing BIVP, whereas there was no difference between LBBAP and BIVP in women.

Study context

Population
Patients with LVEF ≤35% and left bundle branch block, or LVEF ≤40% with expected RV pacing >40%, undergoing initial cardiac resynchronization therapy (CRT)
Exposure
Left bundle branch area pacing (LBBAP) vs biventricular pacing (BIVP) as initial CRT, by sex
Outcome
HF-related hospitalization and all-cause mortality (composite)
Methodological detailsmulticentre
  • Multicentre

Main finding

As reported in the abstract

HF hospitalization and all-cause mortality, by sex (subgroup analysis)

LBBAP (men) vs BIVP (men): P = 0.004 · LBBAP (women) vs BIVP (women): P = 0.23 · LBBAP (men) vs LBBAP (women): P = 0.46 · BIVP (women) vs BIVP (men): P = 0.03

Observational data: associations, not effects.

Safety

Procedure-related complications

Complication rates consistent across all groups

Original publication

Sex Differences in Left Bundle Branch Area Pacing Versus Biventricular Pacing for Cardiac Resynchronization Therapy. JACC Clin Electrophysiol. Published 16 May 2024. doi:10.1016/j.jacep.2024.05.011

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