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Lead-Related and Procedural Outcomes of His Bundle Pacing Versus Left Bundle Branch Area Pacing in Patients
Norma N Gamarra-Valverde1, Bezalel Hakkeem2, Joseph E Marine3
1Universidad Peruana Cayetano Heredia Facultad de Medicina Alberto Hurtado Lima Peru.
Insights
Left bundle branch area pacing (LBBAP) shows better lead performance and procedural outcomes compared to His bundle pacing (HBP) in patients needing atrioventricular node ablation (AVNA). Further research is needed due to limited evidence.
Area of Science:
- Cardiology
- Electrophysiology
- Medical Devices
Background:
- Atrioventricular node ablation (AVNA) necessitates permanent pacing, highlighting the importance of lead performance and procedural durability.
- His bundle pacing (HBP) and left bundle branch area pacing (LBBAP) are advanced physiologic pacing strategies for AVNA patients.
- Comparative evidence between HBP and LBBAP in this context is currently limited.
Purpose of the Study:
- To systematically review and compare the lead-related and procedural outcomes of HBP versus LBBAP in adults undergoing AVNA.
- To assess chronic lead-related dysfunction, procedural duration, and atrioventricular nodal reconduction rates between the two pacing strategies.
Main Methods:
- A systematic literature search was conducted on PubMed/MEDLINE and Embase up to January 31, 2026.
- Included were comparative studies of HBP versus LBBAP in adult AVNA patients.
- Random-effects models were used to pool data for primary (lead dysfunction) and secondary (procedural duration, reconduction) outcomes, with certainty assessed by GRADE.
Main Results:
- Three observational studies (434 patients) were included.
- Left bundle branch area pacing (LBBAP) was associated with significantly lower rates of chronic lead-related dysfunction (RR 15.43) and atrioventricular nodal reconduction (RR 19.34) compared to His bundle pacing (HBP).
- His bundle pacing (HBP) procedures were longer (MD 11.33 min), with very low certainty for lead dysfunction and reconduction outcomes.
Conclusions:
- Left bundle branch area pacing (LBBAP) demonstrates more favorable lead-related and procedural outcomes than His bundle pacing (HBP) in patients undergoing AVNA, based on available observational data.
- The current evidence is limited by small cohorts, sparse events, and nonrandomized designs.
- Findings are considered hypothesis-generating and warrant further investigation through robust clinical trials.
Background:
In patients undergoing atrioventricular node ablation (AVNA), permanent pacing is required, making lead performance and procedural durability important. His bundle pacing (HBP) and left bundle branch area pacing (LBBAP) are physiologic pacing strategies used in this setting, but comparative evidence remains limited.
Methods:
We searched PubMed/MEDLINE and Embase through January 31, 2026, for comparative studies of HBP versus LBBAP in adults undergoing AVNA. The primary outcome was chronic lead-related dysfunction, defined as clinically significant chronic capture-threshold elevation. Secondary outcomes were AVNA procedural duration and atrioventricular nodal reconduction requiring repeat ablation. Random-effects models generated pooled risk ratios (RRs) or mean differences (MDs). Certainty was assessed using GRADE.
Results:
Three observational studies comprising 434 patients were included. Two studies (n = 270) contributed to chronic lead-related dysfunction, which occurred more often with HBP than LBBAP (RR 15.43, 95% CI 2.80-85.04); the estimate was imprecise because of sparse events. Two studies (n = 262) contributed to procedural duration, which was longer with HBP (MD 11.33 min, 95% CI 6.64-16.02; I 2 = 0%). Two studies (n = 262) contributed to atrioventricular nodal reconduction, which was more frequent with HBP (RR 19.34, 95% CI 2.60-143.61; I 2 = 0%). Certainty was low for procedural duration and very low for the other outcomes.
Conclusions:
Among patients undergoing AVNA, LBBAP was associated with more favorable lead-related and procedural outcomes than HBP across available observational studies. Because evidence is limited by small cohorts, sparse events, and nonrandomized designs, these findings should be considered hypothesis-generating.
Trial Registration:
This systematic review was registered in the PROSPERO database (registration number: CRD420261424072).
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