Clinical trials
Atrial fibrillation clinical trials
An irregular, often rapid heart rhythm that can raise the risk of stroke. We’re tracking 546 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT06825104Recruiting
Long-term comparison of two ablation methods for persistent AF
This long-term study follows people who already completed a 12-month study comparing two types of heart ablation for persistent atrial fibrillation. It looks at how well the treatments worked over time.
BronAges 18 years+ - NCT06842147Recruiting
AI Heart Monitor for New Atrial Fibrillation Detection
This trial uses a special long-term heart monitor (one wire) that uses artificial intelligence to find new cases of atrial fibrillation, a type of irregular heartbeat that can increase stroke risk. If you're 60 or older and haven't had AF before, this study could help catch it early.
Zhejiang, QuzhouAges 60 years+ - NCT06871228Recruiting
Stopping blood thinners after successful AF ablation with close heart monitoring
This trial tests whether people with atrial fibrillation who have had a successful ablation procedure can safely stop taking blood thinners (NOACs) if they wear a monitor to check for any silent heart rhythm problems. It may help you avoid the risks of long-term blood thinner use if your ablation has been effective.
Hefei, AnhuiAges 18–80 - NCT06938412Recruiting
Exercise and Fitbit for Afib patients
This study tests whether using a Fitbit activity tracker and a supportive exercise program helps people with AFib become more active. It may help you feel better and manage your heart rhythm.
New York, New YorkAges 18 years+ - NCT06949319Recruiting
Stroke Risk and Blood Clots in New Atrial Fibrillation
This study looks at stroke risk and blood clotting in people who have just been diagnosed with atrial fibrillation (AFib) that is not caused by a heart valve problem, and who have not yet taken blood thinners. It aims to better understand how blood clots form in this condition.
Esbjerg, Region SyddanmarkAges 18 years+ - NCT06951100Recruiting
Study of heart injury in rapid atrial fibrillation
This study looks at how a very fast heart rate from atrial fibrillation might affect the heart muscle. If you are having symptoms from this condition and haven't had a prior heart attack or stent, you may be able to help researchers understand the link and improve care.
Edinburgh, East of EnglandAges 18 years+ - NCT06959121Recruiting
Treating AFib during open-heart surgery with a new device
This trial tests a new device used during open-heart surgery to treat atrial fibrillation (AFib) by delivering tiny, fast electrical pulses to the heart tissue. It is for people who are already having heart surgery and want to also treat their AFib at the same time.
St. Helena, CaliforniaAges 18–85 - NCT06960252Recruiting
Cycle length mapping for long-term atrial fibrillation
This study tests a new mapping technique to find chaotic electrical signals in the heart during persistent atrial fibrillation. It may help doctors better target treatment for people whose atrial fibrillation does not stop with medication.
Taipei, Outside USAges 20 years+ - NCT06973031Recruiting
Testing a new system for treating atrial fibrillation
This trial tests a new device that uses pulsed electric fields to treat atrial fibrillation (AF), a type of irregular heartbeat. It aims to see if this approach is safe and effective for people with AF that comes and goes or lasts for a short time.
KaiserslauternAges 18–80 - NCT06985901Recruiting
Pulsed-field ablation for persistent atrial fibrillation
This trial tests a new type of ablation (pulsed-field) to treat persistent atrial fibrillation (AFib) that lasts more than 7 days. You may qualify if you have symptoms and haven't had other heart ablation procedures except for one specific type.
NiceAges 18 years+ - NCT07036965Recruiting
Comparing two types of ablation catheters for atrial fibrillation
This trial tests two different catheters that use pulsed field energy to treat atrial fibrillation (a heart rhythm problem). It aims to find which one works better for people who need blood thinners but have a high risk of bleeding.
HangzhouAges 118 years+ - NCT07095959Recruiting
Ethanol vein infusion plus pulsed field ablation for paroxysmal AF
This study compares two treatments for paroxysmal atrial fibrillation (AF that comes and goes): using pulsed electric field ablation alone versus combining it with ethanol infusion into a specific vein. The goal is to see which approach works better for first-time ablation patients.
Beijing, Beijing MunicipalityAges 18 years+ - NCT07141745Recruiting
Comparing energy types for repeat atrial fibrillation treatment
This trial compares two different energy methods (electroporation vs radiofrequency ablation) guided by 3D imaging for people who have had a prior ablation for atrial fibrillation but still have recurrences. It aims to find which method is safer and more effective for repeat procedures.
WroclawAges 18–85 - NCT07156877Recruiting
Balloon Catheter Ablation for Atrial Fibrillation
This study tests a new balloon catheter that uses pulsed electric fields to isolate the veins that carry blood from your lungs to your heart. It may be a treatment option for people with atrial fibrillation who are scheduled for an ablation procedure.
BrugesAges 18 years+ - NCT07171463Recruiting
New ablation for paroxysmal atrial fibrillation
This trial tests a new treatment that uses two types of energy (pulsed field and radiofrequency) to fix the heart's electrical signals in people with paroxysmal atrial fibrillation (AFib that comes and goes). It aims to be more effective and safer than standard ablation alone.
Rzeszów, Podkarpackie VoivodeshipAges 18 years+ - NCT07181590Recruiting
Balloon-based ablation for atrial fibrillation: post-approval study
This trial tests a balloon catheter that uses pulsed field energy to treat atrial fibrillation (AF) in people who have tried medication without success. It aims to see how well it works in real-world use.
LinzAges 18 years+ - NCT07267949RecruitingPhase 2
Study of AP31969 for atrial fibrillation rhythm control
This study tests a new medication, AP31969, to control heart rhythm in people with atrial fibrillation. It compares the drug to a placebo to see if it can reduce how often AF episodes happen over time.
Plovdiv, PDAges 18 years+ - NCT07298473Recruiting
Redo ablation for recurrent atrial fibrillation with Sphere-9 catheter
This trial tests a new catheter and system for people who have had one previous ablation for atrial fibrillation but still have symptoms. It aims to see if a repeat procedure can safely and effectively treat recurrent episodes.
Birmingham, AlabamaAges 18 years+ - NCT07321964Recruiting
Digital yoga for quality of life with atrial fibrillation
This trial tests if a digital yoga program can improve quality of life, blood pressure, and heart rate in people with atrial fibrillation. It offers a convenient way to practice yoga from home using a smartphone or tablet.
HerlevAges Any age - NCT07360899Recruiting
Closing the left atrial appendage during heart surgery to prevent stroke
This trial tests if closing the left atrial appendage with a special stitch during planned heart surgery can help prevent strokes in people with atrial fibrillation. If you already need heart surgery, this extra step may reduce your future stroke risk.
Kamenitz, VojvodinaAges 18 years+ - NCT02347111RecruitingPhase 4
Genetic study to guide antiarrhythmic drugs for atrial fibrillation
This study looks at how a person’s genetics may affect how well and safely antiarrhythmic medicines work for atrial fibrillation (AF). If you join, you may get medicine options like flecainide or sotalol, and researchers compare outcomes to genetic information.
Chicago, IllinoisAges 18–100 - NCT02741349Recruiting
Checking stroke and bleeding risks in atrial fibrillation
This study looks at how to better predict both stroke risk and bleeding risk in people with atrial fibrillation. It may help doctors choose safer blood-thinner treatment and follow-up plans.
ParisAges 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 - NCT07407790Recruiting
Smartphone heart check after stroke
This study tests whether using a smartphone app to check your heart rhythm after a stroke can find hidden atrial fibrillation (an irregular heartbeat). If you had a recent stroke or TIA and are not already on blood thinners, you may be able to help doctors detect and prevent future strokes.
KristiansandAges 18 years+
Hear when a new Atrial fibrillation trial opens
We’ll email you when one opens — at most once a week, no account needed, unsubscribe anytime.
Common questions
- Are there clinical trials for atrial fibrillation?
- Yes. Clin2 currently lists 546 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.