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
- NCT05565781Recruiting
Watch for hidden atrial fibrillation after unexplained stroke
This study uses a smartwatch and a longer heart-monitoring test (a Holter) to find an irregular heart rhythm called atrial fibrillation after a stroke whose cause is unclear. If they detect it, it may help guide better prevention and treatment to reduce future stroke risk.
Barcelona, CataloniaAges 55 years+ - NCT06958029Recruiting
Heart rhythm after heart surgery study
This study looks at how often a fast, irregular heartbeat (atrial fibrillation) happens after heart valve or bypass surgery. Knowing this could help doctors take better care of patients after these procedures.
Khon KaenAges 18 years+ - NCT07058831Recruiting
Home monitoring for hidden atrial fibrillation in older adults with high blood pressure
This study tests if home monitoring can detect hidden atrial fibrillation in older adults with high blood pressure and certain risk factors. It aims to catch this irregular heartbeat early so treatment can prevent strokes and other complications.
Rosario, Santa Fe ProvinceAges 65 years+ - NCT07018596Recruiting
New pulsed field ablation for paroxysmal atrial fibrillation
This trial tests a new type of heart procedure that uses gentle electrical pulses to fix abnormal signals in the upper chambers of the heart for people with a specific type of atrial fibrillation that comes and goes on its own. It may be an option if your AFib episodes stop within 7 days and medications haven't helped enough.
Prague, RoentgenovaAges 18–85 - NCT06063538RecruitingEarly Phase 1
Preventing irregular heartbeat after heart surgery with amiodarone
This trial tests if placing a small amount of amiodarone medicine near the heart during open-chest surgery can help prevent a common irregular heartbeat (atrial fibrillation) that often happens after heart surgery.
Chicago, IllinoisAges 20–85 - NCT05029115Enrolling by invitation
SGLT2 pill study for atrial fibrillation with type 2 diabetes
This trial tests whether an SGLT2 inhibitor pill can help people who have atrial fibrillation (an irregular heartbeat) and type 2 diabetes. You may be eligible if you’re in the right age range, on diabetes pills only, and meet specific heart and lab criteria.
Yangcheon, SeoulAges 20–80 - NCT04528511Recruiting
Studying new atrial fibrillation after heart attack
This study looks at how often atrial fibrillation happens soon after an acute heart attack, and who is most at risk. It may help doctors identify patients who need closer heart-rhythm monitoring after a hospital heart attack.
Kaifeng, HenanAges 18 years+ - NCT03409159Recruiting
Left atrial appendage closure registry in Austria
This study keeps records of people who already had a procedure to close a part of the heart called the left atrial appendage in Austria. It helps doctors understand outcomes and safety for patients after the procedure.
GrazAges 18 years+ - NCT02558699Recruiting
Virtual mapping guided catheter ablation for atrial fibrillation
This trial tests whether a “virtual” computer map created from your heart scans can help doctors do catheter ablation to treat atrial fibrillation (AF). It aims to improve the procedure for people whose AF symptoms were not controlled well with anti-arrhythmia medicines.
SeoulAges 19–80 - NCT07518966Recruiting
Heart Rhythm Treatment Success Tracking Study
This study follows patients getting a newer heart rhythm treatment called pulsed field ablation for atrial fibrillation (an irregular heartbeat). Researchers want to understand which patients do well long-term and which may need additional treatment.
Chengdu, SichuanAges 18 years+ - NCT07444372Recruiting
Starting CPAP therapy after atrial fibrillation ablation
This study tests whether starting CPAP therapy soon after a heart procedure called catheter ablation helps people with sleep apnea and atrial fibrillation (an irregular heartbeat) recover better and stay in normal rhythm. CPAP is a machine that helps keep your airway open while you sleep.
Beijing, Beijing MunicipalityAges 18–75 - NCT07316270Recruiting
Catheter ablation for atrial fibrillation after brain bleeding
This trial studies a procedure called catheter ablation to treat atrial fibrillation (an irregular heartbeat) in people who have had a brain hemorrhage. The procedure aims to reduce stroke risk and improve heart rhythm without increasing bleeding risk.
Hefei, AnhuiAges 18 years+ - NCT07242326Enrolling by invitation
Blood Thinner Dose Check for Older Adults With AFib
This study looks at whether older adults with atrial fibrillation are taking the right dose of their blood thinner medicine. It aims to improve how doctors prescribe these medications in primary care.
Ordu, OrduAges 65 years+ - NCT07077811Enrolling by invitation
Pulsed field ablation for heart failure with preserved pumping strength
This trial tests a new procedure called pulsed field ablation for people who have both persistent atrial fibrillation and a type of heart failure (HFpEF). It aims to see if this ablation safely helps control the heart rhythm.
Nantong, JiangsuAges 18–80 - NCT06847932Recruiting
AI ECG to detect early atrial fibrillation
This trial uses an artificial intelligence system to analyze your electrocardiogram (ECG) results and alert your care team if you might be developing atrial fibrillation. It aims to catch this common heart rhythm problem early, so you can get treatment sooner.
TaipeiAges 1 month–3 months - NCT06125925Recruiting
Ablation for AFib in patients with heart failure and preserved ejection fraction
This study tests whether a catheter ablation procedure can help people with atrial fibrillation and a kind of heart failure where the heart pumps normally but doesn't relax properly (HFpEF). It looks at whether the procedure can improve symptoms and heart function.
NanjingAges 18–80 - NCT07527299Recruiting
Varipulse catheter study for persistent atrial fibrillation
This study tests a new catheter to treat persistent atrial fibrillation (a type of irregular heartbeat lasting more than 7 days but less than a year). It aims to isolate the pulmonary veins and superior vena cava to restore normal rhythm. Some participants may also receive a left atrial appendage occlusion device if needed.
Birmingham, AlabamaAges 18–80 - NCT07508618RecruitingPhase 4
Qidong Yixin Granule for preventing atrial fibrillation after ablation
This trial tests whether a traditional Chinese medicine granule, Qidong Yixin, can help prevent atrial fibrillation from coming back after a heart ablation procedure. It is for people with persistent atrial fibrillation who have not had good results from other heart rhythm medications.
HangzhouAges 18–80 - NCT07468123Enrolling by invitation
Estimating Atrial Fibrillation Risk With a Handheld ECG
This trial uses a simple, handheld ECG device (like a small card) to check your risk for atrial fibrillation, a common irregular heartbeat. You'll record short heart tracings at home, and the study team will review them to find hidden risk factors.
Boston, MassachusettsAges 18–90 - NCT07363278Recruiting
Study of a new device for atrial fibrillation ablation
This study looks at how often silent brain lesions happen after a new type of heart procedure for atrial fibrillation (an irregular heartbeat). The procedure uses a device called the Varipulse catheter to help fix the heart's rhythm.
Seoul, Jongro-kuAges 19 years+ - NCT07320560Recruiting
Personalized afib ablation using body surface mapping
This trial uses a special body-surface mapping technique to guide personalized ablation for persistent atrial fibrillation (afib). It aims to improve outcomes for people with an enlarged left atrium who have not had prior ablation.
BerlinAges 18 years+ - NCT05829317RecruitingPhase 4
Magnesium to prevent new atrial fibrillation in ICU patients
This trial tests whether giving magnesium can lower the chance of developing new irregular heartbeat (atrial fibrillation) in critically ill adults in the ICU. If you are at risk but do not already have this rhythm issue, magnesium may help prevent it.
Hamilton, OntarioAges 18 years+ - NCT05955365RecruitingPhase 4
Single anticoagulant blood thinner after stent in atrial fibrillation
This trial tests whether taking a single “P2Y12 inhibitor” blood thinner (instead of multiple medicines) is safe and effective after you get a coronary stent. It’s for people with atrial fibrillation who need long-term blood thinning and have recently had a successful stent procedure.
HasseltAges 18 years+ - NCT02699957Recruiting
Left Atrial Appendage Closure Registry Study
This study tracks patients who have a minimally invasive procedure to close off a small pouch in the heart called the left atrial appendage. The procedure aims to reduce stroke risk, and this registry collects information about how patients do after the procedure.
Washington D.C., District of ColumbiaAges 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.