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Unipolar Voltage Mapping for Personalized Atrial Fibrillation Ablation

RecruitingNAAges 18 Years - 80 YearsAllChina National Center for Cardiovascular Diseases
NCT07630857 on ClinicalTrials.gov ↗
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In plain words

What the trial is, and whether it could suit you

Atrial fibrillation (AF) is a common heart rhythm disorder. While catheter ablation is an effective treatment, many patients still experience AF recurrence after the procedure. One major reason is that the mechanisms that maintain AF are not fully understood. Research suggests that the outer layer of the heart (epicardium) may play an important role in keeping AF going. However, current mapping techniques have limitations in detecting electrical signals from both the inner and outer heart layers. This study uses a different technique called unipolar voltage mapping, which may more accurately capture electrical signals from both heart layers. Specifically, we focus on a specific type of electrical signal called "QS potential" on unipolar mapping, which reflects breakthrough sites between the inner and outer heart layers. In this interventional study, participants with AF undergoing cath

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📋 Eligibility rules (as published)
Inclusion Criteria: * Age ≥ 18 years and ≤ 80 years * Documented diagnosis of atrial fibrillation (paroxysmal or persistent) * Planned to undergo catheter ablation for AF (including patients with recurrent AF after prior ablation) * Able and willing to provide written informed consent * Able to complete scheduled follow-up visits (3 months post-ablation) Exclusion Criteria: * Left ventricular ejection fraction \< 35% * Severe valvular heart disease (moderate to severe mitral stenosis or regurgitation) * History of intracardiac thrombus * Contraindication to anticoagulation * Active infection or sepsis * Pregnancy or breastfeeding * Life expectancy \< 12 months due to comorbid conditions * Participation in another interventional clinical trial within 30 days prior to enrollment
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What it tests

  • Unipolar QS-Potential Guided Catheter Ablation
  • Conventional Pulmonary Vein Isolation
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Where

1 site
Fuwai Hospital
Beijing, China
🤝 Taking part is your choice, and you can leave at any time. Only the trial team can confirm you are eligible — always decide together with your own doctor.
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