Arrhythmias & electrophysiology
Peak frequency annotation algorithm–guided slow pathway ablation in typical atrioventricular nodal reentrant tachycardia
Authors' conclusion
The high-frequency site of the TA at 4-5 o'clock in the peak frequency map could be a novel target of slow pathway ablation with high safety, efficiency, and efficacy.
Study context
- Population
- Patients with typical atrioventricular nodal reentrant tachycardia undergoing slow pathway ablation
- Participants
- 37 patients
- Exposure
- Peak frequency map-guided vs conventional slow pathway ablation
- Peak frequency mapn = 17
- Conventionaln = 20reference
Main finding
As reported in the abstract
Ablation outcomes at successful site: distance to His bundle, junctional rhythm rate, time to junctional rhythm after RF application, elimination rate of jump ups
Elimination rate of jump ups
P = 0.02
| Outcome | Peak frequency map | Conventional | P value |
|---|---|---|---|
| Distance to His bundle | 24.0 ± 4.8 mm | 12.7 ± 4.0 mm | P < 0.0001 |
| Junctional rhythm | 88 ± 17 beats/min | 115 ± 12 beats/min | P < 0.0001 |
| Time to junctional rhythm | 3.4 ± 1.4 seconds | 8.2 ± 4.6 seconds | P < 0.0001 |
Observational data: associations, not effects.
Original publication
Peak frequency annotation algorithm–guided slow pathway ablation in typical atrioventricular nodal reentrant tachycardia. Heart Rhythm. Published 24 May 2024. doi:10.
Summarised from the published abstract; every number is checked against it