ArticleJournal of arrhythmia2023
Detailed investigation of the lesion formation with a novel contact force sensing catheter with a mesh-shaped irrigation tip.
Article in Journal of arrhythmia, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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Who cites it
10 citing papers in PubMed.
- 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
- Interlesion Time as a Key Metric of Procedural Proficiency in Atrial Fibrillation Ablation: From Fellow to Attending.Journal of arrhythmia · 2026Article
- Evaluation of averaged impedance drop percent as a real-time parameter for safe and effective prolonged radiofrequency ablation using the TactiFlex SE catheter: an ex vivo study.Journal of interventional cardiac electrophysiology : an international journal of arrhythmias and pacing · 2025Article
- Long-term outcome of lesion size index-guided high-power ablation with high-density mapping for pulmonary vein isolation in patients with paroxysmal atrial fibrillation.Journal of arrhythmia · 2025Article
- Feasibility and efficacy of 50 W ablation with the TactiFlex catheter for the initial pulmonary vein isolation of atrial fibrillation.Journal of arrhythmia · 2025Article
- Optimal ablation settings of TactiFlex SE laser-cut irrigated-tip catheter: comparison with ThermoCool SmartTouch SurroundFlow porous irrigated-tip catheter.Journal of interventional cardiac electrophysiology : an international journal of arrhythmias and pacing · 2024Article
- Ablation of Paroxysmal Atrial Fibrillation: between Present and Future.Reviews in cardiovascular medicine · 2024Review
- Safety and effectiveness of the first contact force ablation catheter with a flexible tip.Heart rhythm O2 · 2023Article
- Advancements in catheter tip shape and technology: The way forward.Journal of arrhythmia · 2023Article
- Detailed investigation of the lesion formation with a novel contact force sensing catheter with a mesh-shaped irrigation tip.Journal of arrhythmia · 2023Article
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Authors and funding
12 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Background: Recently, a novel contact force (CF) sensing catheter with mesh-shaped irrigation tip (TactiFlex SE, Abbott) was invented and is expected to be useful for safe and effective radiofrequency ablation. However, this catheter's detailed characteristics of the lesion formation are unknown. Methods: With an in vitro model, TactiFlex SE and its predecessor, FlexAbility SE, were used. A cross-sectional analysis of 60 s lesions (combination of various energy power settings [30, 40, and 50 W], and CFs [10, 30, and 50 g]) and longitudinal analysis (combination of various powers [40 or 50 W], CFs [10, 30, and 50 g] and ablation times [10, 20, 30, 40, 50, and 60 s]) of both catheters were analyzed and compared. Results: One hundred eighty RF lesions were created in protocol 1 and 300 in protocol 2. The lesion formation, impedance changes, and steam pops characteristics were similar between the two catheters. Higher CFs were related to higher incidences of steam pops. A nonlinear, time-dependent increase in the lesion depth and diameter was observed for all power and CF settings, and linear, positive correlations between the RF delivery time and lesion volume were observed for all power settings. Compared with 40 W, a 50 W ablation created greater lesions. Longer durations with higher CF settings had a higher steam pop incidence. Conclusions: The lesion formation and incidence of steam pops with TactiFlex SE and FlexAbility SE were similar. A 40 or 50 W ablation with careful CF control not to exceed 30 g in addition to monitoring impedance drops was required to safely create transmural lesions.
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