Why are redo AF ablations required and what does it take? Type of index PVI predicts pattern of redo ablations

• Published in: Europace (London, England) England), 2022-05, Vol.24 (Supplement_1)
• Main Authors: Obergassel, J, Taraba, S, Nies, M, Atzor, C, Lemoine, MD, Rottner, L, Schleberger, R, Dinshaw, LWH, Meyer, C, Willems, S, Reissmann, B, Ouyang, F, Metzner, A, Kirchhof, P, Rillig, A
• Format: Article
• Language: English
• ISSN: 1099-5129; 1532-2092
• DOI: 10.1093/europace/euac053.228

Abstract Funding Acknowledgements Type of funding sources: None. Background Catheter ablation targeting isolation of the pulmonary veins (PVI) is the most effective treatment for atrial fibrillation (AF). Despite its high overall effectiveness, repeat AF ablations (re-do procedures, RDP) are often required to maintain sinus rhythm. Purpose Determine predictors for multiple and/or complex RDP, evaluate reference values for procedure duration and radiation exposure during index PVI (iPVI) and nth RDP in a large cohort. Methods and Results Data mining identified 934 (mean age 62.6 ± 12.3 years, 346 females) out of 6848 total AF ablation patients from a large German AF ablation center between 09/2008 and 09/2021 with an index PVI and at least one RDP. Analysis included 2152 procedures (out of 8750 total AF-related ablations). At iPVI, AF pattern was classified as paroxysmal AF (PAF) in 387 patients (41%). All others (59%) were classified as non-paroxysmal AF (Non-PAF). Non-PAF was significantly more frequent in males (64% vs. 49%, p