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
- NCT02219984Recruiting
Survey of adults taking blood thinners in a patient registry
This study builds a registry by asking adults who take blood thinners (anticoagulants) about their experiences. It may help improve care by learning how these medicines are used in real life.
Bologna, BOAges 18 years+ - NCT04628078Recruiting
Echocardiogram-guided heart procedure registry for atrial fibrillation
This study keeps a real-world record of people with atrial fibrillation who are planning a procedure to close off the heart’s left atrial appendage. Doctors use echocardiography (heart ultrasound) to guide the closure and track outcomes to improve care.
BernAges 18 years+ - NCT05891145Recruiting
Remimazolam to prevent irregular heartbeat after heart surgery
This trial tests whether a medication called remimazolam can help prevent atrial fibrillation—a common, irregular heart rhythm that can happen after surgery. It focuses on people having a specific planned type of heart bypass surgery and checks if the study medication reduces postoperative rhythm problems.
Yangzhou, JiangsuAges 50–70 - NCT05960721Recruiting
Low-dose blood thinner versus standard care after heart appendage closure
This study looks at whether a lower-dose blood thinner works as well as the usual recommended anti-clot treatment after a procedure that closes off the heart’s left atrial appendage. It may help reduce bleeding risk while still preventing dangerous blood clots.
Xi'an, ShannxiAges 18 years+ - NCT05961748Recruiting
Brain and heart illness registry for adults in China
This study is a registry that collects health information from adults who have certain new heart and/or brain conditions. It may help researchers understand how these problems occur together and improve future care planning.
Beijing, Beijing MunicipalityAges 18 years+ - NCT05494034Recruiting
Monitoring heart rhythms after stroke to guide care
This study uses a small implantable heart monitor to track heart rhythm in people after an acute ischemic stroke or TIA. It aims to learn how often hidden heart rhythm problems show up, which could help doctors choose better stroke prevention treatments.
AthensAges 40–100 - NCT07856472Recruiting
AI heart test study for heart disease diagnosis
This study uses artificial intelligence to analyze heart tests (ECGs) to help diagnose and predict outcomes for people with heart disease. It may lead to better and faster detection of heart conditions.
Incheon, IncheonAges 18 years+ - NCT05777551Recruiting
High-power short treatment for irregular heartbeat
This trial studies a specific heart-rhythm procedure that uses higher power for a shorter time to treat atrial fibrillation (AF), an irregular heartbeat. It may help some people control AF and reduce rhythm episodes, while doctors compare outcomes using their chosen approach.
ParisAges 18–80 - NCT06090591Recruiting
Heart condition research registry at Dubrava Hospital
This study is a registry that will collect information from people with certain heart conditions (like having a pacemaker, a blood clot, a heart attack, or a valve replacement procedure called TAVI). The goal is to learn more about these conditions and how they are treated.
ZagrebAges 18 years+ - NCT05264831Recruiting
Ablation treatment after failed electric heart shock
This trial tests whether blocking faulty heart signals from the pulmonary veins (with or without additional “substrate” modification) works better when electric cardioversion doesn’t stop persistent atrial fibrillation. It may help people who remain in atrial fibrillation after cardioversion by reducing symptoms and abnormal rhythm over time.
Caluire-et-CuireAges 18–80 - NCT04005508Recruiting
Study sleep apnea and heart outcomes in high-risk atrial fibrillation
This trial looks at how obstructive sleep apnea (OSA, a breathing problem during sleep) relates to heart outcomes in people with atrial fibrillation (AF). It may help doctors better predict risk and choose safer care for people who are high cardiovascular risk.
SingaporeAges 22–99 - NCT06455644Recruiting
CT vs. X-ray for sizing heart device in AF treatment
This study tests whether using a CT scan or a special X-ray (DSA) is better for picking the right size of a left atrial appendage closure device during a combined ablation and closure procedure. It aims to make the procedure safer and more effective.
Foshan, GuangdongAges 18 years+ - NCT07835126Enrolling by invitation
A safer way to treat paroxysrial atrial fibrillation
This study tests a new method of catheter ablation for paroxysmal atrial fibrillation, using a special saline solution and higher power for shorter duration to isolate the pulmonary veins. It aims to improve safety and effectiveness while minimizing damage to surrounding tissue.
Ningbo, ZhejiangAges 18 years+ - NCT07816029Recruiting
Closing a heart pouch to prevent stroke in atrial fibrillation
This study tests a device and procedure to close off a small pouch in the heart (left atrial appendage) where blood clots can form in people with atrial fibrillation. The goal is to reduce the risk of stroke, possibly lowering the need for long-term blood thinners.
PragueAges 18 years+ - NCT07809347Recruiting
Factors linked to slow heart rate after pulsed field ablation
This study looks at why some people have a slower heart rate after a heart procedure called pulmonary vein isolation using pulsed field ablation (PFA). It aims to find out what factors might make this more likely, which could help doctors predict and manage it better.
Wroclaw, Lower Silesian VoivodeshipAges 18 years+ - NCT07806890Recruiting
New 4D ultrasound imaging during left atrial appendage closure
This study tests a new 3D/4D ultrasound technology that creates detailed images of the heart during a left atrial appendage closure procedure. The goal is to see if this imaging tool helps doctors perform the procedure more safely and accurately.
Cleveland, OhioAges 18 years+ - NCT07776054RecruitingPhase 4
SGLT2 inhibitor after heart shock for atrial fibrillation with heart failure
This study tests whether a diabetes drug called an SGLT2 inhibitor can help keep your heart in a normal rhythm after a procedure to shock it back into rhythm. It is for people with persistent atrial fibrillation and a type of heart failure where the heart is stiff.
Seoul, SeoulAges 19 years+ - NCT03168659Recruiting
Study of HeartLight during catheter ablation for irregular heartbeat
This study looks at the HeartLight device during a procedure to treat atrial fibrillation (an irregular heart rhythm) that comes and goes. It is meant for adults whose symptoms continue even after trying at least one anti-arrhythmia medicine.
Tucson, ArizonaAges 18 years+ - NCT01258231Recruiting
Genetic test to predict risks after heart surgery
This study looks for genetic (DNA) clues that may help predict side effects or complications after heart surgery. If you join, your genome information may be used to understand who is at higher risk and why.
Boston, MassachusettsAges 20–90 - NCT05076019Recruiting
Atorvastatin during heart valve surgery for patients over 60
This trial studies whether taking atorvastatin (a cholesterol medicine) around the time of surgical aortic valve replacement can improve outcomes. It is mainly for people who have not taken similar medicines recently and do not have certain heart rhythm or liver/kidney problems.
OdenseAges 60–95 - NCT07727681RecruitingPhase 4
Statins to Prevent Atrial Fibrillation After Lung Surgery
This trial tests whether taking a statin before and after lung surgery can prevent a common heart rhythm problem called atrial fibrillation (AFib). If you are 60 or older and having a lung segment or lobe removed, this study may help you avoid AFib after your operation.
BeijingAges 60 years+ - NCT07724171Recruiting
Long-term results after PFO closure surgery
This study looks at how well patients do over time after having a hole in their heart (patent foramen ovale, or PFO) closed with a small device inserted through a vein. It may help doctors understand the benefits and risks of the procedure.
SeoulAges 19 years+ - NCT06383975Recruiting
Two new treatments for AF that returned after first procedure
This trial tests two new treatments for persistent atrial fibrillation that came back after an initial procedure. One uses a targeted chemical injection, the other uses a special energy field to re-isolate the veins involved.
BrugesAges 18 years+ - NCT04844944Recruiting
Heart registry for adults with heart failure, CAD, or atrial fibrillation
This is a hospital-based study that collects standardized information about adults with specific heart conditions—heart failure, coronary artery disease, or atrial fibrillation. It may help doctors and researchers better understand these diseases and improve future care.
BerlinAges 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.