Congenital heart diseaseCohort study
Intraoperative Conduction Mapping to Reduce Postoperative Atrioventricular Block in Complex Congenital Heart Disease
- Cohort study
Authors' conclusion
Intraoperative HB mapping can be performed safely and is associated with significantly reduced postoperative AVB/PM in select populations undergoing complex biventricular repair, including heterotaxy syndrome and non-L-malposed great arteries.
Study context
- Population
- Patients with complex congenital heart disease undergoing biventricular repair, 2019–2022
- Participants
- 149 vs 201
- Exposure
- Intraoperative His bundle (HB) mapping vs no mapping
- Mappedn = 149
- Unmappedn = 201reference
- Outcome
- Postoperative atrioventricular block requiring pacemaker (AVB/PM)
Main finding
As reported in the abstract
Postoperative AVB/PM, by subgroup
- Mapped vs Unmapped: P = 0.026
- Mapped vs Unmapped: P = 0.045
- results reported for subgroups only
Observational data: associations, not effects.
Further findings
HB identified (mapped patients)
- HB identified
- 97% (n = 144 of 149)
- Median mapping time
- 6 minutes
Safety
Intraoperative systemic air embolism
- No episodes of intraoperative systemic air embolism occurred
Original publication
Intraoperative Conduction Mapping to Reduce Postoperative Atrioventricular Block in Complex Congenital Heart Disease. J Am Coll Cardiol. Published 19 November 2024. doi:10.1016/j.jacc.2024.07.054
Summarised from the published abstract; every number is checked against it