Arrhythmias & electrophysiology
Inferior Sino-Atrial Node Exit Sites Are Associated With Electrical Remodeling
Authors' conclusion
SANi identified by high-resolution epicardial mapping were associated with extensive RA remodeling and are most likely due to altered sino-atrial conduction pathways.
Study context
- Population
- Patients with structural heart disease undergoing elective open-heart surgery, high-resolution epicardial mapping
- Participants
- 27 patients
- Exposure
- Inferior vs superior sino-atrial node exit sites
- SANin = 7
- Outcome
- Potential voltage in SAN area
Main finding
As reported in the abstract
P = 0.014
Observational data: associations, not effects.
Further findings
Total RA activation time
P = 0.046
Heart rate · preoperative and intraoperative
- Heart rates comparable between groups, consistent preoperatively and intraoperatively
Original publication
Inferior Sino-Atrial Node Exit Sites Are Associated With Electrical Remodeling. JACC Clin Electrophysiol. Published 12 November 2025. doi:10.
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