Clinical trial Recruiting at 1 site Interventional Ages 40 to 75

Improving Atrial Fibrillation Treatment with New Ablation Techniques

Official title: Efficacy and Safety of Quantitative Superior Vena Cava Isolation in Addition to Pulmonary Vein Isolation in Patients With Paroxysmal Atrial Fibrillation: the SCORE Randomized Controlled Trial

Run by Chinese Academy of Medical Sciences, Fuwai Hospital · NCT05908955 · Data updated 2026-11-12

This study is testing if a new way of treating paroxysmal atrial fibrillation by combining two techniques can help patients feel better and stay safe compared to the standard method.

Quick facts

Study typeInterventional
Ages40 Years to 75 Years
SexAll
Enrollment290 (estimated)
SponsorChinese Academy of Medical Sciences, Fuwai Hospital
Academic / other
Locations1 site (Beijing, Beijing Municipality)
StatusRecruiting
StartedMarch 17, 2024
Main results expectedSeptember 30, 2025
Study endsDecember 31, 2025
Registry record updatedFebruary 14, 2025
Trial IDNCT05908955 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are individuals aged 40-75 with symptomatic paroxysmal atrial fibrillation unresponsive to antiarrhythmic drugs.

Probably not a fit

Patients with a history of catheter ablation, thoracic surgery, or significant heart failure may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This clinical trial investigates the effectiveness and safety of combining quantitative superior vena cava isolation (SVCI) with pulmonary vein isolation (PVI) for patients suffering from paroxysmal atrial fibrillation (PAF). Participants will be randomly assigned to receive either standard PVI or PVI plus quantitative SVCI, with a follow-up period of 12 months to assess outcomes. The study aims to establish a standardized ablation procedure that minimizes risks while maximizing efficacy through the use of a quantitative ablation index. By addressing the limitations of previous SVCI studies, this trial seeks to provide clearer insights into the potential benefits of this combined approach.

Why it matters

Potential benefit: If successful, this approach could lead to improved treatment outcomes for patients with paroxysmal atrial fibrillation.

How similar studies have gone: Previous studies on superior vena cava isolation have shown mixed results, making this approach both novel and necessary for further exploration.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Symptomatic paroxysmal AF that are unresponsive to antiarrhythmic drugs (one or more than one).
* Willing to undergo catheter ablation for AF.
* Age: 40-75 years old.

Exclusion Criteria:

* History of any type of catheter ablation for cardiac arrhythmias.
* History of any type of thoracic surgery, including cardiac surgery.
* History of malignant tumors.
* History of permanent pacemaker implantation.
* Peripherally inserted central catheter for long-term
* Heart failure (left ventricular ejection fraction ≤40% or NYHA class III\~IV).
* Sinus node dysfunction
* Allergy to contrast agents.
* Pregnancy or lactation.
* Age: \<40yrs or \>75yrs.

Where it's running

  • Chinese Academy of Medical Science, Fuwai hospital
    Beijing, Beijing Municipality, China
    Recruiting

Study contacts

  • Principal investigator: Jun Liu, MD, PhD — Chinese Academy of Medical Sciences, Fuwai Hospital
  • Study coordinator: Wenchi Guan, MD, PhD
  • Email: wenchi.guan@outlook.com
  • Phone: +8613521270747

Similar studies

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How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.