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
- NCT06987825Recruiting
Chinese atrial fibrillation registry study
This study tracks patients with atrial fibrillation (AF) over time to better understand the condition and improve care. You may be asked to share health information and attend follow-up visits.
Beijing, Beijing MunicipalityAges 18 years+ - NCT07064616Recruiting
Pulsed field vs. cryoballoon ablation for persistent atrial fibrillation
This trial compares two techniques—pulsed field ablation and cryoballoon ablation—to treat persistent atrial fibrillation (a type of irregular heartbeat that lasts less than a year). The goal is to see which method works better and is safer for patients.
Sagamihara, KanagawaAges 18–85 - NCT07047235Recruiting
Targeted ablation for persistent atrial fibrillation
This trial is testing a specific approach to catheter ablation for people with persistent atrial fibrillation. It aims to improve how abnormal heart tissue is targeted to help restore a normal rhythm.
LondonAges 18 years+ - NCT06995391Recruiting
Alcohol reduction app for atrial fibrillation
This trial tests if a smartphone app can help people with atrial fibrillation reduce or stop drinking alcohol. The goal is to see if cutting down on alcohol makes AF symptoms less severe or occur less often.
San Francisco, CaliforniaAges 21 years+ - NCT06724718Recruiting
Using a smartwatch to detect atrial fibrillation after chest surgery
This trial tests whether a smartwatch can detect atrial fibrillation in people who have had major chest surgery (like lung removal) within the last 48 hours. If successful, this could help catch heart rhythm problems early without extra hospital equipment.
AmiensAges 18 years+ - NCT05427435Recruiting
Testing alcohol treatment of a heart vein during atrial fibrillation ablation
This study tests whether applying a small amount of alcohol to a specific heart vein (“vein of Marshall”) is safe and feasible during a standard atrial fibrillation (AF) ablation. It may help improve AF treatment, but the goal here is mainly to see if the approach can be done safely in the right patients.
PessacAges 18 years+ - NCT06883864Recruiting
Ablation for leaky valve with constant atrial fibrillation
This study tests whether a catheter ablation procedure (a way to fix abnormal heart rhythms) can help people who have both constant atrial fibrillation and severe mitral regurgitation (a leaky heart valve). It is for people whose heart valve leak is caused by the rhythm problem, not by valve damage.
Hefei, AnhuiAges 18–80 - NCT06510556Recruiting
Testing a new mapping and ablation system for AFib
This study tests a new device (FARAFLEX) that uses pulsed field energy to treat atrial fibrillation (AFib). You may qualify if you have persistent or paroxysmal AFib symptoms and have not had a prior ablation.
BrusselsAges 18 years+ - NCT04606693Recruiting
Screening for sleep apnea before heart rhythm ablation
This study looks at whether checking for sleep apnea (breathing pauses during sleep) and treating it helps people prepare for atrial fibrillation ablation. It may help by improving outcomes for patients with atrial fibrillation who keep having episodes despite medication.
Madrid, MadridAges 18 years+ - NCT06324201Recruiting
Long-term safety of a new ablation system for paroxysmal AF
This study tests a new system (QDOT MICRO and VISITAG SURPOINT) used during a catheter ablation procedure to treat atrial fibrillation (AF). It aims to see how safe and effective it is over the long term for people whose AF comes and goes and hasn't been controlled by medication.
Birmingham, AlabamaAges 18 years+ - NCT05976685Recruiting
Close the left atrial appendage after stroke despite blood thinners
This study tests whether closing a heart pouch called the left atrial appendage can prevent future strokes in people with atrial fibrillation who had an ischemic stroke even while taking blood thinners. It may help reduce stroke risk by blocking a common place where clotting can start.
BrugesAges 18 years+ - NCT05996159Recruiting
Using very high power for short duration to treat atrial fibrillation
This study tests a new way to perform a common procedure (pulmonary vein isolation) for people with paroxysmal atrial fibrillation. Instead of using the standard amount of energy for a longer time, this method uses a very high amount of energy for a very short time. This might make the procedure faster and just as safe.
SeoulAges 19 years+ - NCT03091452Recruiting
Atrial fibrillation surgery registry for people treated with ablation
This study is a real-world registry that collects health information from people who have atrial fibrillation and were treated with a heart surgery procedure called ablation. It may help doctors better understand outcomes and care for people with this condition.
München, BavariaAges 18–100 - NCT04088071Recruiting
Ablation for heart rhythm problems using a specific technology
This study looks at how well catheter ablation works for treating certain heart rhythm disorders (like atrial fibrillation or ventricular arrhythmias) using a specific brand of catheters. The aim is to gather real-world data to better understand the procedure's outcomes.
Birmingham, AlabamaAges 18 years+ - NCT04436978RecruitingPhase 4
Best blood thinner plan for atrial fibrillation after stent
This study compares different blood-thinner (“antithrombotic”) strategies in people with atrial fibrillation or flutter who recently had a stent placed (PCI). It aims to find a plan that lowers clot risk while keeping bleeding risk as low as possible.
AalstAges 18 years+ - NCT06200311Recruiting
Atrial fibrillation ablation to prevent heart damage in women and men
This trial tests whether a procedure called AF ablation (which treats irregular heartbeats) can stop further damage to the heart muscle caused by atrial fibrillation. It may help people with both atrial fibrillation and early signs of heart muscle weakening.
GroningenAges 65–80 - NCT06212674RecruitingPhase 4
Stroke prevention: combined heart procedure for atrial fibrillation
This study tests a combined approach — a catheter ablation to fix the irregular heartbeat (atrial fibrillation) and a device to close the left atrial appendage — in people who recently had a stroke caused by a clot. The goal is to prevent future strokes and reduce the need for long-term blood thinners.
Katowice, Upper SilesiaAges 18–75 - NCT04701749Recruiting
Stopping blood thinners with a left-atrial device in bleeding risk
This trial studies whether it’s safe to temporarily stop blood-thinning medicine in people with long-term atrial fibrillation who have bleeding from a radiation-damaged bladder. It uses a procedure with a device placed in the left atrium to help lower stroke risk while reducing bleeding risk.
Clermont-FerrandAges 18 years+ - NCT02138695Recruiting
Study of outcomes after atrial fibrillation catheter ablation
This study follows people after a procedure called catheter ablation to treat atrial fibrillation (an irregular heart rhythm). It aims to learn which factors help predict outcomes, so future care can be better tailored.
SeoulAges 19 years+ - NCT05442970Recruiting
Study to assess risk of atrial fibrillation
This study looks at how to better judge a person’s risk of developing atrial fibrillation, a type of irregular heartbeat. You may help researchers by completing interviews and assessments that guide future risk estimates.
HamburgAges 18–85 - NCT06647251Recruiting
Comparing different radiofrequency modes for atrial fibrillation ablation
This trial tests three different ways of delivering radiofrequency energy using a specific catheter (QDOT) during a first-time procedure to treat atrial fibrillation (AF), a type of irregular heartbeat. It aims to find which method works best for patients with recent or short-lasting AF episodes.
Paris, ParisAges 18 years+ - NCT06791915Recruiting
Comparing breathing method during heart ablation for AFib
This trial studies two ways of using a breathing machine during a heart procedure called radiofrequency ablation for atrial fibrillation (AFib). It aims to find which method is better and safer.
KocaeliAges 18 years+ - NCT07139301Recruiting
Timing of blood thinners after stroke clot removal in atrial fibrillation
This study aims to find the best time to start blood thinners after emergency clot removal in people with atrial fibrillation who had a stroke. It may help reduce the risk of another stroke or bleeding.
Ma’anshan, AnhuiAges 18 years+ - NCT06954610Recruiting
Heart Check for Stroke Risk in Atrial Fibrillation
This trial uses heart imaging to better understand stroke risk in people with atrial fibrillation (an irregular heartbeat). It may help doctors decide on the best treatment to prevent another stroke.
BernAges 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.