High-power radiofrequency ablation for ventricular tachycardia in patients with structural heart disease: one-year follow-up data from the multicenter prospective registry

Background: The outcomes of ventricular tachycardia (VT) ablation in patients with structural heart disease (SHD) are not ideal. High-power radiofrequency (RFA) may have a long-term beneficial effect this patient cohort.Objective: To evaluate the safety, early and efficacy high-power RFA for VT concomitant SHD multicenter prospective registry.Methods: Our study included total 63 (66,7% them were men; median age was 61.0 [51.0-66.5] years) ischemic drug-resistant who scheduled (50 W). Non-fluoroscopic 3D mapping systems used bipolar activation standard settings. safety end point perioperative complications, such as death, hemopericardium, stroke, myocardial infarction, electrical storm, vascular complications. points non-inducibility at freedom from 12 months follow-up. secondary changes implantable cardioverter-defibrillator (ICD) therapy, sonographic findings, number hospital admissions.Results: All underwent under general sedation. One clinical induced 96.8% before ablation. After no VTs (P < .0001 vs baseline). No complications observed. Freedom without antiarrhythmic drugs 82.6% ICD therapies significantly decreased follow-up compared baseline (3.2% 31.7%, respectively; P = .0001). left ejection fraction increased 48.7% ± 14.7% to 50.3% 11.9% .038). There statistically significant decrease admission rate after (from 2 [range: 0-12] 0 0-3], .0001).Conclusion: ischemia demonstrated its high efficacy, which linked improvement. Further randomized studies will help introduce approach into routine practice. Received 5 September 2022. Revised 16 February 2023. Accepted 31 May Funding: did sponsorship. Conflict interest: authors declare conflict interest. Contribution authorsConception design: S.V. Korolev, A.Sh. Revishvili, A.B. Romanov Data collection analysis: E.A. Artyukhina, V.V. Shabanov, O.V. Sapelnikov, A.V. Tsyganov, RomanovStatistical Korolev Drafting article: Critical revision Romanov, Revishvili Final approval version be published: