Arrhythmias & electrophysiology
Catheter ablation approach targeting epicardial connections to the right pulmonary vein antrum detected before pulmonary vein isolation
Authors' conclusion
Ablation targeting BT-RPV sites is effective for right PV isolation. Extensive ablation is required to eliminate BT-RPV.
Study context
- Population
- Patients with AF undergoing initial pulmonary vein (PV) isolation
- Participants
- 124 patients
- Exposure
- BT-RPV vs Without BT-RPV
- BT-RPVn = 83
- Without BT-RPVn = 41reference
- Outcome
- Efficacy of ablation targeting epicardial connections (BT-RPV) for right PV isolation
Main finding
As reported in the abstract
BT-RPV
67%
83
- PV isolation by wide antral circumferential ablation (WACA) in all patients without BT-RPV
- 41
- PV isolation by WACA when all BT-RPV sites covered by isolation line
- 48 patients
- PV isolation by WACA when not all BT-RPV sites covered
- 5 of 35 patients
- BT-RPV sites targeted where WACA failed
- 35
- Initial BT-RPV ablation led to PV isolation
- 20 sites
- Sites requiring repeat BT-RPV ablation
- 15
- Ablated area of successful BT-RPV ablation
- 0.9 (0.6-1.2) cm²
- Corresponding area activated within ms after BT-RPV emergence
- 15 (14-16) ms
- Ablating area activated within 14 ms of BT-RPV emergence predicting successful PV isolation: sensitivity
- 91%
- Specificity
- 100%
Observational data: associations, not effects.
Original publication
Catheter ablation approach targeting epicardial connections to the right pulmonary vein antrum detected before pulmonary vein isolation. Heart Rhythm. Published 26 July 2024. doi:10.
Composed by AI from the published abstract and checked against it. How Briefs are made →