Arrhythmias & electrophysiologyCohort study
High-frequency areas as an electrophysiological clue for accessory pathway ablation: Characterizing spatial dissociation with peak frequency mapping
- multicenter retrospective study
Authors' conclusion
High-frequency areas on OTNF maps are consistently located adjacent to, but spatially distinct from, successful AP ablation sites. This quantifiable spatial dissociation represents a novel electrophysiological target that may improve the precision and efficiency of AP CA.
Study context
- Population
- Patients undergoing successful catheter ablation (CA) for atrioventricular reentrant tachycardia caused by accessory pathways (APs), with omnipolar technology near field (OTNF) mapping datapatients undergoing successful CA for atrioventricular reentrant tachycardia
- Participants
- 33 patients
- Exposure
- Peak frequency (PF) at the successful ablation site vs the highest PF in the immediate vicinity
Main finding
As reported in the abstract
Peak frequency (PF)
P < 0.01
Observational data: associations, not effects.
Further findings
Spatial distance between highest PF site and successful ablation site
- median distance
- 4 mm (interquartile range 0-6 mm)
Directional displacement of highest-frequency site, viewed from the annulus
cases
- colocated with the successful site
- 21 (64%)
- shifted counterclockwise
- 9 (27%)
- shifted clockwise
- 3 (9%)
Original publication
High-frequency areas as an electrophysiological clue for accessory pathway ablation: Characterizing spatial dissociation with peak frequency mapping. Heart Rhythm. Published 6 February 2026. doi:10.1016/j.hrthm.2026.01.048
Summarised from the published abstract; every number is checked against it