ArticleJournal of interventional cardiac electrophysiology : an international journal of arrhythmias and pacing2024
Influence of the irrigation flow pattern and catheter tip design on the lesion formation: an ex vivo experimental model.
Article in Journal of interventional cardiac electrophysiology : an international journal of arrhythmias and pacing, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Interplay of Probe Stability and Oscillation During Very-High-Power Short-Duration Ablation in Pulmonary Vein Isolation for Atrial Fibrillation.Pacing and clinical electrophysiology : PACE · 2026Article
- Ring Char Formation During High-Power, Short-Duration Ablation Using an Irrigated Six-Hole Contact Force Sensing Tip Catheter.Journal of arrhythmia · 2026Article
- Impact of irrigation flow rates on lesion size and safety of ablation catheters: an ex vivo porcine heart study.Heart and vessels · 2025Article
- The benefits of ablation using TactiFlex compared with TactiCath in an ex vivo model: a face-to-face experimental comparison study.Journal of interventional cardiac electrophysiology : an international journal of arrhythmias and pacing · 2024Article
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Authors and funding
11 authors.
Funding
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Abstract
backgroundLesion formation during catheter ablation is influenced by the power, contact force (CF), time, and catheter stability. However, the influence of the irrigation effects on lesion formation remains unknown.
methodsAn ex vivo experiment using conductive gel was performed. Using three different catheter designs (TactiFlex ™ SE [TF], IntellaNav MiFi ™ OI [MiFi], QDOT MICRO™ [QDOT]), a cross-sectional analysis of the lesion size and surface lesion type of 10g/40W lesions with a combination of various ablation times was performed in protocol 1. A longitudinal analysis (combination of various powers [30, 40, and 50W] and various ablation times with a 10g setting) was performed to investigate the influence of the auto-regulated irrigation system (QDOT) on lesion formation in protocol 2.
resultsThe lesion formation with the QDOT catheter tended to create larger ablation lesions, while that with the TF catheter created smaller lesions than the other catheters. The lesion surface characteristics were divided into two patterns: ring (MiFi catheter and QDOT) and crescent (TF) patterns. The auto-regulated irrigation system did not influence the lesion formation, and the relationship between the lesion formation and RF energy exhibited similar changes regardless of the ablation power setting.
conclusionThe lesion formation and lesion surface characteristics differed among the different irrigation tip designs. An auto-regulated irrigation system did not affect the lesion creation or surface lesion characteristics. Care should be given to the inter-product differences in the lesion characteristics during RF catheter ablation, partly due to the irrigation flow control and tip design.
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