Arrhythmias & electrophysiologyCohort study
Transseptal puncture and catheter ablation of atrial fibrillation in patients with atrial septal occluder devices: procedural techniques and outcomes
- Retrospective case series
- single-centre
- consecutive patients
Authors' conclusion
TSP and AF ablation can be performed safely and effectively in patients with ASO devices.
Study context
- Population
- Patients with an atrial septal occluder device undergoing atrial fibrillation (AF) ablationof 1550 with atrial septal occluder (ASO) implantation
- Participants
- 28 patients
- Exposure
- Transseptal puncture (TSP) through native septum vs through ASO device
- Native septumn = 17
- Device puncturen = 11
- Outcome
- Successful transseptal access (procedural outcomes)
Main finding
As reported in the abstract
Successful transseptal access
Transseptal access achieved
27 of 28 patients (96.4%)
Observational data: associations, not effects.
Further findings
Balloon dilation
- Frequently required in device puncture cases
Pulmonary vein isolation and adjunctive ablation
- Successfully completed in all patients
Safety
Major complications; residual interatrial shunts
- No major complications
- Small residual interatrial shunts immediately after the procedure resolved spontaneously during follow-up
Original publication
Transseptal puncture and catheter ablation of atrial fibrillation in patients with atrial septal occluder devices: procedural techniques and outcomes. Europace. Published 7 April 2026. doi:10.1093/europace/euag071
Summarised from the published abstract; every number is checked against it