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- W4387013847 abstract "Abstract Background : Catheter ablation is recommended in patients with frequent and symptomatic ventricular arrhythmias (VAs) in an otherwise normal heart. Right or left outflow tract (OT) are the most common origins, and catheter ablation is highly effective with low complication rates. However, outcome of catheter ablation of VAs other than the OT (non-OTVAs) is limited. The aim of this single-center study was to assess the safety and mid-term outcome of catheter ablation for non-OTVAs. Method and Results : From 2013 to 2018, 251 patients who underwent catheter ablation for idiopathic non-OTVAs were enrolled and grouped according to the origins (HPS, n=108; PM/MB, n=47; TA, n=70; MA, n=26), 244 (97.2%) had acute elimination of VAs. The time of VAs recurrence of the single procedure was 1.69 (0.12,9.72) months, with 66% occurring within the first 3 months. The recurrence rate was significantly higher in the PM/MB group than in the TA ( p =0.025) and MA groups ( p =0.023). The single procedure success rate in all patients was 70.1%, in which 66.7%, 59.6%, 80%, and 76.9% were achieved in the HPS, PM/MB, TA, and MA groups, respectively ( p =0.284). After multiple procedures, the total success rate was 76.5% at the follow-up of 4.38±2.42 years. The rate was significantly lower in the PM/MB group than in the TA group ( p =0.035). In subgroup analysis, no significant difference was observed in the recurrence rate of single procedure in patients with different VA origins within the PM/MB (log-rank test, p =0.546). Conclusion : Despite a certain percentage of recurrences observed in the mid-term follow-up, catheter ablation remained feasible and effective for idiopathic non-OTVAs." @default.
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- W4387013847 date "2023-09-25" @default.
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- W4387013847 title "Mid-term Outcome of Catheter Ablation of Idiopathic Non-Outflow Tract Ventricular Arrhythmias" @default.
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- W4387013847 doi "https://doi.org/10.21203/rs.3.rs-3307045/v1" @default.
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