Clinical trials
Atrial fibrillation clinical trials
An irregular, often rapid heart rhythm that can raise the risk of stroke. We’re tracking 543 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT05333666Recruiting
Checking how blood NOAC levels relate to outcomes
This study looks at whether the amount of a blood thinner (NOAC) in your bloodstream is linked to health outcomes. It may help doctors better understand how to monitor and use these medicines safely.
Taipei, Please SelectAges 20 years+ - NCT07250529Recruiting
Comparing two pacemaker pacing methods for heart block
This study compares two types of pacemaker pacing methods in people with heart block and normal heart pumping function. It looks at how often short bursts of fast heart rhythm occur in the upper heart chambers, which may help improve long-term heart health.
PátraiAges 18 years+ - NCT06065124Recruiting
Study on weight loss surgery for heart failure with irregular heartbeat
This trial tests if weight loss surgery can help people with heart failure and atrial fibrillation (an irregular heartbeat) improve their heart condition. You may join if you are between 45 and 70, have a BMI of 32 to 40, and have mild to moderate heart failure with preserved pumping function.
Arnhem, GelderlandAges 45–70 - NCT06906432Recruiting
Brain-Heart Injury After Brain Bleed Study
This study looks at how a brain bleed can affect the heart. Researchers hope to understand the link between brain and heart injury to help improve care for people who have had a brain bleed.
Beijing, Beijing MunicipalityAges 18–80 - NCT06903845Recruiting
Apixaban study for atrial fibrillation
This trial tests whether apixaban, a blood thinner, works well for people with atrial fibrillation who also have heart or circulation conditions. It uses a smartphone app to help track your treatment.
Seongnam, GyeonggidoAges 19 years+ - NCT05852704RecruitingPhase 3
Dapagliflozin to prevent irregular heart rhythm after bypass surgery
This trial looks at whether dapagliflozin (a diabetes medicine that helps the kidneys and heart) can lower the chance of atrial fibrillation, an irregular heart rhythm, after coronary artery bypass (CABG) surgery. If you’re scheduled for planned bypass surgery, this study may help reduce post-operative rhythm problems.
BrnoAges 18 years+ - NCT07217392Recruiting
Study on pacing the left bundle branch area of the heart
This study tests a new way to place a pacemaker lead in the left bundle branch area of the heart. It may help people who need a pacemaker to see if this approach is safe and works well.
Rio de Janeiro, Rio de JaneiroAges 18 years+ - NCT04964765Recruiting
3D heart mapping after early irregular heartbeat after surgery
This study uses 3D heart mapping to understand a specific kind of irregular heartbeat that can happen soon after cardiac surgery. It may help doctors better recognize what’s happening in the heart during the early recovery period.
Sankt PöltenAges 18 years+ - NCT06935513Recruiting
Wearable devices for stroke prevention
This trial tests if using a smart wearable device can help people at high risk for stroke stay active and reduce their risk. You may be able to join if you have certain health conditions or habits that increase your stroke risk.
Nantong, JiangsuAges 30 years+ - NCT07174206Recruiting
Smartwatch monitoring for heart patients
This trial tests a smartwatch tool to track heart rhythm and detect problems in people with heart disease. It may help find irregular heartbeats early during routine checkups.
São Paulo, São PauloAges 22 years+ - NCT07173855RecruitingPhase 4
Magnesium replacement in ICU patients
This trial tests whether giving magnesium as part of a standard hospital protocol can lower the risk of irregular heartbeat and improve survival in patients admitted to the intensive care unit.
Ajax, OntarioAges 16 years+ - NCT07146061Recruiting
Three-year follow-up for coronary disease and atrial fibrillation
This is a follow-up study checking on people who were in the pCAD-POAF trial for 3 years after they joined. It looks at what happens over time for people with both coronary artery disease and atrial fibrillation.
BeijingAges 18–85 - NCT07154303Enrolling by invitation
Testing smartphones to detect irregular heart rhythm
This trial tests if smartphones and their accessories can detect a specific type of irregular heart rhythm called atrial fibrillation. If you have a form of atrial fibrillation or a normal heart rhythm, you may help see how well these devices work.
Hong KongAges 22 years+ - NCT07149688Recruiting
Heart disease health program for older adults in Qujiang
This study follows older adults in Qujiang District who have chronic heart or blood vessel conditions. It aims to improve care through village-based management and help researchers better understand how to support long-term heart health.
Beijing, Beijing MunicipalityAges 60 years+ - NCT07129564Recruiting
Stepwise treatment for persistent atrial fibrillation
This study tests a stepwise treatment plan for people with persistent atrial fibrillation (a long-lasting irregular heartbeat) who also have an enlarged left atrium. It aims to see if a medication called amiodarone plus a cardioversion procedure can help restore normal rhythm.
ChongqingAges 18–70 - NCT06957366Recruiting
Managing Blood Thinners Before High-Risk Surgery
This study looks at how to safely manage your blood thinner (DOAC) around the time of a planned, high-bleed-risk surgery or procedure involving a spinal needle. The goal is to find the best way to stop and restart your medication to prevent bleeding and clotting problems.
Hartford, ConnecticutAges 18 years+ - NCT07118046Recruiting
X-ray vs. 3D mapping for balloon AFib ablation
This study compares two ways to guide a balloon-based ablation procedure for atrial fibrillation: using only X-ray (fluoroscopy) versus using a 3D mapping system. The goal is to see if one method is safer or more effective.
Madrid, MadridAges 18 years+ - NCT07122947Recruiting
Apple Watch to detect AFib after heart surgery
This study tests if an Apple Watch can help detect when atrial fibrillation (an irregular heartbeat) comes back after heart surgery. You'll wear an Apple Watch and a small skin patch (Zio Patch) to track your heart rhythm.
St Louis, MissouriAges 22 years+ - NCT07119528Recruiting
App-based care after heart ablation
This study tests whether a smartphone app can help people recover after a new type of heart ablation called pulse field ablation for atrial fibrillation. It aims to see if the app improves follow-up care and quality of life.
SeoulAges 19 years+ - NCT07096219Enrolling by invitation
Catheter Ablation for Leaky Mitral Valve in Persistent Atrial Fibrillation
This trial tests if catheter ablation—a procedure to fix heart rhythm—can help people with a leaky mitral valve that is caused by atrial fibrillation (functional mitral regurgitation). If you have persistent atrial fibrillation and moderate leaky valve, you may benefit from this treatment.
Guangzhou, GuangdongAges 18–75 - NCT07087587Recruiting
Sleep apnea treatment for AFib: a personalized trial
This study tests whether treating sleep apnea with a CPAP machine can reduce the number of AFib episodes you have. It's a personalized 'N-of-1' trial, meaning you'll try both CPAP and no CPAP at different times to see what works best for you.
Cleveland, OhioAges 18–85 - NCT07076329Recruiting
Using a special diet to prevent malnutrition in older heart patients
This trial tests whether a special type of food can help prevent malnutrition in older adults with heart failure or atrial fibrillation. It looks at how the bacteria in your gut and inflammation in your body affect your brain and overall health.
FlorenceAges 70 years+ - NCT04247685Recruiting
MRI-safe heart rhythm test in people with atrial fibrillation
This trial checks whether a specific MRI-safe 12-lead heart recording (ECG) works correctly during MRI scans. It may help improve how doctors monitor heart rhythm while imaging, especially for people with atrial fibrillation.
Toronto, OntarioAges 18–90 - NCT07024927Recruiting
Heart rhythm disorder registry
This study observes people with atrial fibrillation or ventricular tachycardia who are having their first catheter ablation procedure. The goal is to collect information to improve future treatments.
Beijing, Beijing MunicipalityAges 18 years+
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Common questions
- Are there clinical trials for atrial fibrillation?
- Yes. Clin2 currently lists 543 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.