ArticleJournal of interventional cardiac electrophysiology : an international journal of arrhythmias and pacing2024
High efficiency single-catheter workflow for radiofrequency atrial fibrillation ablation in the QDOT catheter era.
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 7 papers.
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Who cites it
7 citing papers in PubMed, 7 citations in OpenAlex.
- Single-catheter radiofrequency pulmonary vein isolation for atrial fibrillation: a comparative evaluation.Frontiers in cardiovascular medicine · 2026Article
- Pulsed-Field Ablation Versus Radiofrequency Ablation for Paroxysmal Atrial Fibrillation: A Systematic Review and Meta-Analysis.Journal of arrhythmia · 2025Review
- Vascular Access and Closure Management for Electrophysiological Interventions: Small Interventions Big Impact.Current cardiology reports · 2025Review
- Optimized workflow for paroxysmal atrial fibrillation ablation using very high power short duration.Frontiers in cardiovascular medicine · 2025Article
- Temperature-controlled Ablation Versus Conventional Ablation for Pulmonary Vein Isolation in the Treatment of AF: A Systematic Review and Meta-Analysis.Arrhythmia & electrophysiology review · 2025Review
- Contemporary Trends in Pulsed Field Ablation for Cardiac Arrhythmias.Journal of cardiovascular development and disease · 2024Review
- Local impedance drop-guided versus lesion size index-guided pulmonary vein isolation.Journal of interventional cardiac electrophysiology : an international journal of arrhythmias and pacing · 2024Article
Corrections and comments
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Authors and funding
8 authors at 1 institution in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundHigh-power short-duration (HPSD) ablation may improve the consistency and efficiency of pulmonary vein isolation (PVI). The novel QDOT Micro™ catheter (Biosense Webster, Inc.) with temperature feedback and microelectrodes aims to enhance PVI efficiency and safety. This study wants to evaluate the feasibility, safety, and efficiency of a standardized single-catheter workflow for PVI using QDOT (Q-FLOW).
methodsThe Q-FLOW includes single transeptal access, radiofrequency encircling of the PVs using a power of 50 W in a temperature/flow-controlled mode, and validation of the circles with microelectrodes. A 1:1 propensity-matched cohort of patients treated with conventional power-controlled ablation using a circular mapping catheter (CMC-FLOW) was used to compare procedural and clinical outcomes.
resultsA total of 150 consecutive atrial fibrillation patients (paroxysmal 67%, persistent 33%) were included. First-pass isolation rate was 86%. Procedural time, X-ray time, and dose were significantly lower for the Q-FLOW vs the CMC-FLOW (67.2 ± 17.9 vs 88.3 ± 19.2 min, P < 0.001; 3.0 ± 1.9 vs 5.0 ± 2.4 min, P < 0.001; 4.3 ± 1.9 vs 6.4 ± 2.3 Gycm
conclusionA streamlined single-catheter workflow for PVI using QDOT was feasible and safe, resulting in a high rate of first-pass isolation and a low complication rate. The Q-FLOW further improved the efficiency of PVI compared to the standard CMC-FLOW, without difference in the 12-month outcome.
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