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
- NCT07273994RecruitingPhase 4
Comparing two amiodarone doses after heart shock treatment for atrial fibrillation
This trial tests two different ways of taking amiodarone (a heart rhythm medicine) to keep your heart in a normal rhythm after a procedure called electrical cardioversion. It's designed for people with persistent atrial fibrillation (a fast, irregular heartbeat lasting at least 7 days).
BarcelonaAges 18 years+ - NCT07281898Recruiting
Burst stimulation for paroxysmal atrial fibrillation
This trial tests a special type of pacing called burst stimulation to see if it can help people with paroxysmal atrial fibrillation (AF) who are already scheduled for their first catheter ablation. The goal is to improve outcomes and reduce AF episodes.
Wuhan, HubeiAges 18–80 - NCT07301190Recruiting
Study of PFLotus for persistent atrial fibrillation
This study tests a new device called PFLotus for people with persistent atrial fibrillation (AF), a type of irregular heartbeat. The goal is to see if it can help restore a normal heart rhythm in people who haven't gotten better with medicine.
ChengduAges 18–75 - NCT07358611Recruiting
Heart mapping-guided ablation for persistent atrial fibrillation
This trial tests whether using a special heart-mapping device during ablation (a procedure to fix irregular heartbeats) can improve outcomes for people with persistent atrial fibrillation and an enlarged left heart chamber.
BarcelonaAges 18 years+ - NCT03272620Recruiting
Emergency atrial fibrillation patients invited to study
This study includes people who have atrial fibrillation and are seen in the emergency department. It aims to learn from emergency care and may help improve how atrial fibrillation is managed in the ER.
ViennaAges 18 years+ - NCT07444320Recruiting
Testing new energy pulses for atrial fibrillation treatment
This trial tests a new way to deliver energy (FARAPULSE PFA system) to treat atrial fibrillation (AF), a type of irregular heartbeat. It aims to see if these new waveforms can safely and effectively stop AF symptoms and improve quality of life.
SplitAges 18 years+ - NCT07535268Recruiting
Heart rhythm ablation outcomes in minority patients
This registry tracks outcomes for racial and ethnic minority patients undergoing a specific type of heart rhythm treatment (ablation) for atrial fibrillation. The goal is to understand how well this treatment works across different populations.
New York, New YorkAges 18 years+ - NCT07575867Recruiting
Reduced Blood Thinner Strategy After Heart Device Closure
This trial tests whether patients who receive a special device to close a hole in the heart (to prevent stroke from irregular heartbeat) can safely take fewer blood-thinning medications afterward. The study compares taking a standard blood thinner for 3 months versus taking aspirin only, to see which approach works best with fewer bleeding risks.
MoscowAges 18 years+ - NCT07630857Recruiting
Heart Mapping to Personalize Atrial Fibrillation Treatment
This trial tests a new way to map the heart's electrical signals to help doctors better target and treat atrial fibrillation (an irregular heartbeat). If you're having a procedure to treat AF, this study may help improve the success of your treatment.
Beijing, Beijing MunicipalityAges 18–80 - NCT07649109RecruitingPhase 4
Heart Device Detected Irregular Heartbeats: Treatment Study
This study follows patients who have a heart rhythm device (pacemaker, defibrillator, or resynchronization device) and have experienced brief episodes of fast irregular heartbeats detected by the device. The study compares treatment approaches to understand which helps patients stay healthier and feel better.
TaipeiAges 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+ - 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+ - 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 - NCT04685317Recruiting
Sentinel brain-protection device during atrial fibrillation ablation
This trial tests whether a specialized “brain protection” device can improve safety during atrial fibrillation (AF) catheter ablation. It may help reduce the risk of stroke or related complications while treating AF.
Rochester, MinnesotaAges 18 years+ - NCT03546374Recruiting
Stop a common heart rhythm with surgery add-on therapy
This study looks at whether an added heart device approach around the time of planned open-heart surgery can help treat non-paroxysmal atrial fibrillation (AF), a long-lasting irregular heartbeat. It may help lower ongoing AF burden in people who also need non-emergency heart surgery.
Palo Alto, CaliforniaAges 18 years+ - NCT03862859RecruitingPhase 4
Warfarin safety for people with atrial fibrillation on dialysis
This trial studies whether the blood thinner warfarin is safe and effective for preventing stroke and blood clots in people who have atrial fibrillation and need long-term dialysis. It may help your care team better balance clot prevention against bleeding risk.
Herlev, HerlevAges 18 years+ - NCT04045665RecruitingPhase 3
Blood thinner vs usual care for new heart rhythm after bypass surgery
This trial tests whether using a blood thinner in people with new, temporary atrial fibrillation after CABG (heart bypass surgery) can reduce harmful outcomes compared with standard treatment. It may help prevent stroke or other complications if your rhythm problem fits the trial’s timing and risk profile.
Little Rock, ArkansasAges 18 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 - NCT05557526Recruiting
Improving quality of life after atrial fibrillation ablation
This study aims to improve how patients feel in daily life after a procedure to treat atrial fibrillation (an irregular heartbeat). It focuses on whether better patient expectations and support can lead to a better quality of life after the procedure.
Düsseldorf, North Rhine-WestfaliaAges 18 years+ - 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+ - 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+ - 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+
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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.