ArticleJournal of arrhythmia2025
Feasibility and efficacy of 50 W ablation with the TactiFlex catheter for the initial pulmonary vein isolation of atrial fibrillation.
Article in Journal of arrhythmia, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed.
- Clinical Impact of Interlesion Distance on Acute Pulmonary Vein Isolation Success in Patients With Paroxysmal Atrial Fibrillation.Circulation reports · 2026Trial
- Clinical and experimental evaluation of averaged impedance drop during radiofrequency catheter ablation.Journal of interventional cardiac electrophysiology : an international journal of arrhythmias and pacing · 2026Article
- Efficacy of a Novel Ablation Index Algorithm for Cavotricuspid Isthmus Ablation Using a Flexible-Tip Ablation Catheter.Journal of arrhythmia · 2026Article
- Averaged Impedance Drop Estimates Conduction Gap During Pulmonary Vein Isolation in Atrial Fibrillation.Journal of cardiovascular electrophysiology · 2026Article
- Feasibility and efficacy of 50 W ablation with the TactiFlex catheter for the initial pulmonary vein isolation of atrial fibrillation.Journal of arrhythmia · 2025Article
- Editorial to "Feasibility and efficacy of 50 W ablation with the TactiFlex catheter for the initial pulmonary vein isolation of atrial fibrillation".Journal of arrhythmia · 2025Article
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Authors and funding
13 authors.
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Abstract
Background: A novel contact force (CF) sensing catheter with a mesh-shaped irrigation tip (TactiFlexTM SE, Abbott), is expected to provide safe and effective radiofrequency ablation. Our previous study revealed that the TactiFlex catheter needs a higher power for pulmonary vein isolation (PVI) due to the long tip length. This study aimed to examine the feasibility and safety of a 50 W ablation with the TactiFlex for PVI of atrial fibrillation (AF). Methods: A PVI was performed in 100 AF patients using TactiFlex catheters with a 50 W setting, 5-20 g CF, and 15-20 s ablation time. The primary outcomes included a successful PVI, the incidence of first-pass isolations (FPIs), the presence of PV conduction gaps, and the incidence of complications. Results: FPIs were achieved for 82/100 (82%) right pulmonary veins (RPVs) and 87/100 (87%) left PVs (LPVs). Among the unsuccessful RPV FPIs, residual carina potentials were observed in 16/18 cases (89%), PV gaps in 1/18 cases (5.5%), and both carina and PV gaps in 1/18 cases (5.5%). Similarly, among the unsuccessful LPV FPIs, residual carina potentials were observed in 11/13 cases (84.6%), PV gaps in 1/13 cases (7.7%), and both carina and PV gaps in 1/13 cases (7.7%). Periesophageal nerve injury occurred in 1/100 cases (1%), and no cardiac tamponade occurred. The overall AF-free rate at one-year was 81.7%. Conclusions: The 50 W ablation with the TactiFlex demonstrated a high rate of an FPI, low incidence of PV gaps, and proved to be a safe and effective approach for the initial PVI of AF.
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