Clinical trials
Atrial fibrillation clinical trials
An irregular, often rapid heart rhythm that can raise the risk of stroke. We’re tracking 541 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT07713615Recruiting
Blood clotting markers and heart ultrasound in people with device-detected atrial fibrillation
This study looks at blood clotting markers and heart ultrasound in people who have a heart device that detected brief episodes of irregular heartbeat (atrial fibrillation). It aims to understand how these markers relate to stroke risk.
EsbjergAges 50 years+ - NCT04776759Recruiting
Study of first atrial fibrillation in young adults
This study records and follows people under 35 who have their first episode of an irregular heartbeat. It aims to better understand this condition early on and how it shows up in real life.
Caen, NormandyAges Up to 35 years - NCT05311137Recruiting
Closed-loop monitoring for atrial fibrillation
This study tests a “closed-loop” approach to treating atrial fibrillation, meaning the care plan may adjust based on how you’re doing. It may help improve how heart rhythm problems are managed over time.
Shanghai, Shanghai MunicipalityAges 18–100 - NCT04432220RecruitingPhase 4
Taking blood thinners one year after atrial fibrillation ablation
This study looks at whether people who have stayed in normal rhythm one year after atrial fibrillation ablation should continue blood thinning treatment. It may help guide safer, more personalized choices about long-term blood thinners after a successful procedure.
SeoulAges 19–80 - NCT05044208Recruiting
Test heart ultrasound and monitoring clues for atrial fibrillation
This study looks at heart ultrasound pictures and heart-rhythm recordings to predict who may develop atrial fibrillation (AF) after a stroke or TIA. If you qualify, your results may help doctors better spot people at higher risk earlier.
TullnAges 18 years+ - NCT04997824Recruiting
AI-guided selection for atrial fibrillation ablation
This trial tests whether an artificial intelligence (AI) system can help choose the best patients for a procedure called catheter ablation for atrial fibrillation (AF). It may improve which people benefit most while keeping safety in mind.
SeoulAges Any age - NCT05776797Recruiting
Ablation vs best medicines for CRT patients with permanent atrial fibrillation
This trial compares two approaches—an AV junction ablation procedure versus continued best medical treatment—in people who already have a heart device for heart failure (CRT) but still have ongoing permanent atrial fibrillation. It aims to improve how well your heart rhythm is controlled and how effectively the device can pace your heart.
Liberec, Liberec RegionAges 18–85 - NCT05961865Recruiting
Study of inflammation during catheter ablation for atrial fibrillation
This study measures changes in inflammation in people with atrial fibrillation (AF) who are getting a catheter ablation procedure. It may help doctors better understand what happens in the body during the procedure and why some patients do better than others.
MilanAges 18–85 - NCT03642509Recruiting
Compare a heart procedure to blood-thinner pills for stroke prevention
This trial studies whether closing off part of the heart (the left atrial appendage) can prevent stroke as well as long-term newer blood-thinner pills. It may help people with atrial fibrillation who recently had a stroke or a warning stroke (TIA).
Aarhus, Central JutlandAges 18 years+ - NCT06187311RecruitingPhase 4
Rivaroxaban for atrial fibrillation patients
This trial tests two doses of rivaroxaban (15mg and 20mg) to see how well they prevent strokes in people with non-valvular atrial fibrillation, a type of irregular heartbeat not caused by a heart valve problem. It may be an option if you need blood thinners to lower your stroke risk.
SeoulAges 19–99 - NCT04715425Recruiting
Surgery vs catheter procedure for persistent atrial fibrillation
This trial compares two ways to treat persistent atrial fibrillation: a minimally invasive surgery approach versus a catheter ablation. It may help people find the most effective option to reduce ongoing abnormal heart rhythm and avoid repeat procedures.
AmsterdamAges 18–80 - NCT05860894Recruiting
Study of new ICU atrial fibrillation
This trial looks at people who develop a new irregular heart rhythm called atrial fibrillation while in the intensive care unit (ICU). It tests an approach to help with that condition after critical illness, aiming to improve outcomes for those affected.
BesançonAges 18 years+ - NCT06249347Recruiting
New ablation approach for persistent atrial fibrillation with stroke risk
This trial tests a new type of catheter ablation (using heat to create scar lines in the heart) for people with persistent atrial fibrillation who have a higher risk of stroke or bleeding. It aims to see if this approach can help prevent strokes and reduce the need for long-term blood thinners.
Wenzhou, ZhejiangAges 18 years+ - NCT05638841Recruiting
Study of repeat atrial fibrillation risk after ablation
This study follows adults who have had a procedure to treat an irregular heartbeat, to understand who is more likely to have it return. It may help doctors predict risk and plan follow-up after the procedure.
BeijingAges 18 years+ - NCT07857044Recruiting
Left atrial fibrosis in persistent atrial fibrillation study
This study looks at how scar tissue in the heart's upper chambers relates to other health issues in people with persistent atrial fibrillation. It aims to improve understanding and treatment for this condition.
Augsburg, BavariaAges 18 years+ - NCT04593498Recruiting
Test for abnormal heart rhythm triggers for some heart rhythm types
This study looks at people who have frequent abnormal signals from the upper heart (supraventricular extra beats or short runs) and how that relates to atrial fibrillation risk. If you qualify, you may help researchers understand better ways to prevent or manage certain heart rhythm problems.
StockholmAges 70–89 - NCT06145906Recruiting
Optimizing catheter ablation for atrial fibrillation
This trial is studying a way to improve the entire process of catheter ablation for atrial fibrillation. It may help people who are having this procedure for the first time and have a normal-sized left atrium and good heart function.
Zhengzhou, HenanAges 18–80 - NCT06363604Recruiting
Alcohol injection with ablation for persistent atrial fibrillation
This trial is testing a new approach to treat persistent atrial fibrillation (a type of irregular heartbeat) by combining standard catheter ablation with a special injection of alcohol (ethanol) into certain heart veins. It may help people whose symptoms haven't improved with medication.
Shanghai, Shanghai MunicipalityAges 18–85 - NCT06402617Recruiting
Ablation of active spots in atrial fibrillation
This trial is testing a new way to treat atrial fibrillation by using a catheter to target the specific areas in the heart that trigger the irregular heartbeat. If you have persistent atrial fibrillation and haven't had prior catheter ablation, you may be eligible to join.
LondonAges 18–85 - NCT07852221Recruiting
Pace and ablate for atrial fibrillation
This study looks at how well a treatment called 'pace and ablate' works for people with atrial fibrillation. It involves using a pacemaker or similar device to control the heart rate, and it aims to see who benefits most and how they do over time.
ZabrzeAges 18 years+ - NCT03355456Recruiting
Catheter ablation for atrial fibrillation with low-voltage mapping
This trial studies a catheter procedure that targets areas in the heart that show low electrical voltage to treat atrial fibrillation (an irregular heartbeat). You may be eligible if you have non-paroxysmal atrial fibrillation, have tried heart rhythm medicines, and your scan shows low-voltage areas in the left atrium.
Cleveland, OhioAges 18–85 - NCT05978388Recruiting
CT scan before catheter ablation for atrial fibrillation
This trial is testing whether a coronary CT angiography scan, performed before catheter ablation for atrial fibrillation, helps doctors find hidden blockages in heart arteries. It may help people without known heart disease avoid unnecessary procedures.
Hellerup, Capital RegionAges 18 years+ - NCT07792239RecruitingPhase 2
Study of budiodarone for atrial fibrillation
This study tests a new medicine, budiodarone, to help control atrial fibrillation (an irregular heartbeat) in people who haven't been helped by other treatments. It may reduce the time spent in AF and improve symptoms.
GdyniaAges 18–80 - NCT06584266Recruiting
Cardiac imaging registry for atrial fibrillation
This study collects data from heart imaging tests (TEE) in people with atrial fibrillation or atrial flutter. It aims to better understand how these imaging results relate to treatment decisions and outcomes.
BrnoAges 18 years+
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Atrial fibrillation trials by city
Studies with a site in or near these metro areas.
Atrial fibrillation trials by state
Studies with a site anywhere in these states.
Common questions
- Are there clinical trials for atrial fibrillation?
- Yes. Clin2 currently lists 541 recruiting atrial fibrillation studies from the U.S. registry, each rewritten for real people, not researchers, so you can see what it’s testing and who it’s for.
- How do I know if I qualify for a atrial fibrillation trial?
- Each study lists its eligibility criteria — rules about age, diagnosis, and prior treatments. On every Clin2 trial page we explain these in words written for real people and offer a short, optional pre-screen for a fit read. The study team makes the final decision.
- Does it cost anything to join a atrial fibrillation trial?
- Using Clin2 is always free. Many trials cover the cost of the study treatment and related visits; some reimburse travel. The study team explains exactly what’s covered before you decide.
Related conditions
Clin2 helps you find and understand clinical trials and does not provide medical advice. Study data comes from ClinicalTrials.gov. Talk with your doctor about whether a specific trial is right for you.