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
- NCT05963698Recruiting
Closing off a heart pouch to prevent stroke
This study tests a procedure that seals off the left atrial appendage (a small heart pouch) to help prevent stroke in people with atrial fibrillation. You may be considered if your stroke risk is high and you are already on blood-thinner medicine.
Birmingham, AlabamaAges 18 years+ - NCT06075628Recruiting
CT scan study after LAA closure procedure
This study looks at long-term outcomes after LAA closure (a procedure to reduce stroke risk) by reviewing CT scans of the device. It aims to learn if blood flow around the device affects healing and future health.
Overland Park, KansasAges 18 years+ - NCT06358391Recruiting
Comparing two needles for left atrial access in heart procedures
This trial compares two devices used to create a small opening in the wall between the upper chambers of the heart so doctors can reach the left side to treat heart rhythm problems or other conditions. It may help if you need a left atrial procedure and are healthy enough for the puncture.
Bucheon-siAges 18 years+ - NCT06299514Recruiting
Pacemaker and ablation for heart failure with atrial fibrillation
This trial tests if a pacemaker plus an ablation procedure can improve heart failure symptoms in people with atrial fibrillation. It is for those with moderate to severe heart failure who are already on the right medications.
Victoria, British ColumbiaAges 18 years+ - NCT06099106Recruiting
Testing a new device to close the left atrial appendage in AFib
This trial tests a new device called ENDOMATIC SEPIOLA that closes a small pouch in your heart (the left atrial appendage) to lower your stroke risk. It is a non-surgical option for people with atrial fibrillation who cannot take blood thinners.
TbilisiAges 18 years+ - NCT03243175RecruitingPhase 3
Avoiding blood thinners after brain bleeding in atrial fibrillation
This Phase 3 trial studies whether it’s safer to avoid long-term blood thinners after a spontaneous brain bleed in people with atrial fibrillation (an irregular heart rhythm). It compares different prevention strategies to lower the risk of stroke or other blood-vessel problems without causing new, serious bleeding.
LilleAges 18 years+ - NCT06929897Enrolling by invitation
Comparing Two Ablation Methods for Persistent Atrial Fibrillation
This study compares two types of ablation (a procedure that uses energy to fix irregular heartbeats) for people with persistent atrial fibrillation. It tests whether adding extra treatment to the back of the heart's left upper chamber helps improve outcomes compared to standard treatment alone.
SeoulAges 20–80 - NCT03428048Recruiting
NEXUS Registry for coronary artery disease or Afib patients
This is a research registry that collects health information about people with coronary artery disease or Afib. It may help doctors and researchers better understand these heart conditions and improve future care.
Glenwood Springs, ColoradoAges 18 years+ - NCT05292209RecruitingPhase 2
RiLuzole pill to reduce atrial fibrillation on heart monitoring
This Phase 2 study tests whether riLuzole can reduce episodes of atrial fibrillation (an irregular heart rhythm) around the time of planned cardioversion. Doctors will monitor your heart using a Holter monitor to count and compare rhythm episodes.
Salt Lake City, UtahAges 18 years+ - NCT05660811RecruitingPhase 4
Antiplatelet medicines after left atrial closure in dialysis patients
This trial looks at the best blood-thinning (antiplatelet) plan after a left atrial appendage closure procedure in people with kidney failure on dialysis. It may help reduce stroke risk while also lowering medicine-related side effects.
Warsaw, Masovian VoivodeshipAges 18 years+ - NCT05920824Recruiting
Testing treatment for leaking mitral and tricuspid valves
This trial studies people with atrial fibrillation and moderate-to-severe leakiness in the mitral and tricuspid valves in the heart. It likely aims to improve symptoms and heart function by better addressing how these valve leaks happen.
LondonAges 18 years+ - NCT06324682Recruiting
Comparing heart pacemaker types for better treatment
This trial looks at different ways to pace the heart (like left, right, or both sides) to see which works best for people who need a pacemaker. If you have a heart condition requiring a pacemaker, this study may help find the safest and most effective option for you.
Ferrara, FEAges 18 years+ - NCT07620262Recruiting
Combined atrial fibrillation treatment and stroke prevention study
This study tests a new approach for people with atrial fibrillation (a type of irregular heartbeat) who are also at high risk for stroke. It combines a procedure to fix the heart's electrical signals with closing off a small pouch in the heart to reduce stroke risk, potentially avoiding long-term blood thinners.
Bay Shore, New YorkAges 18 years+ - NCT05565209Recruiting
Registry for closing the left atrial appendage
This study is a hospital registry that collects information from people who are having a device placed to close a part of the heart called the left atrial appendage. It helps doctors understand how this procedure works in real life, including different outcomes.
CréteilAges 18 years+ - NCT06047782Recruiting
MRI study of atrial scarring and stroke risk
This study uses a special heart MRI to look for scarring in the upper chambers of the heart (atria) that might cause hidden atrial fibrillation after a stroke with no known cause. It may help explain why the stroke happened and guide future treatment.
DijonAges 18 years+ - NCT07638995Recruiting
Leadless Pacemaker for Slow Heart Rhythm
This trial tests a new type of pacemaker (without traditional wires) for people whose hearts beat too slowly. It may help you if you have symptoms like fainting or fatigue from a slow heartbeat and haven't had a pacemaker before.
Bay Shore, New YorkAges 18 years+ - NCT07390175Recruiting
New heart-ablation method for long-lasting arrhythmias
This study tests a new way to destroy the tissue causing dangerous heart rhythms using a detailed model of how the heart's electrical signals spread. It may be an option for people with long-lasting atrial fibrillation or hard-to-control ventricular arrhythmias who are already scheduled for a standard ablation procedure.
Madrid, MadridAges 18 years+ - NCT04814420Recruiting
Study heart scarring in sleep apnea, with or without atrial fibrillation
This pilot study looks at whether obstructive sleep apnea leads to heart scarring (called atrial fibrosis), especially in people with and without an irregular heart rhythm (atrial fibrillation). It may help researchers understand who is at higher risk and why, using sleep testing and heart imaging.
New Orleans, LouisianaAges 18–75 - NCT06402851RecruitingPhase 4
Blood thinner or none for atrial fibrillation with dialysis
This trial compares two types of blood thinners (vitamin K antagonists and factor Xa inhibitors) versus no blood thinner in people with atrial fibrillation who are on dialysis or have very advanced kidney disease. It aims to see which option is safest and most effective for preventing strokes and bleeds.
Salvador, Estado de BahiaAges 18 years+ - NCT06686485Recruiting
Combined heart procedure for AFib and stroke prevention
This trial combines two procedures at once: a pulsed field ablation to treat atrial fibrillation and a device implant to close the left atrial appendage to reduce stroke risk. It is designed for people in Asia who need both treatments and may benefit from having them together.
Suzhou, JiangsuAges 18 years+ - NCT04449523Recruiting
Check for hidden heart rhythm problems after silent brain strokes
This study looks at how often “silent” atrial fibrillation—an irregular heart rhythm that can be symptom-free—happens in people who have silent brain stroke spots on MRI. If it finds a link, it may help identify which patients might benefit from closer heart monitoring or prevention steps.
GrazAges 50 years+ - NCT06801392Recruiting
Pulsed-field ablation for non-paroxysmal atrial fibrillation
This trial tests a new way to treat non-paroxysmal atrial fibrillation (AF) using a focused type of ablation (pulsed-field energy) on specific areas of the heart. It aims to see if targeting the left atrial wall and mitral isthmus can improve outcomes for people who have not had this procedure before.
PragueAges 18 years+ - NCT06715449RecruitingPhase 2/Phase 3
Testing empagliflozin after a stroke with unknown cause
This trial tests if a diabetes drug called empagliflozin can help the heart's left atrium work better in people who have had a stroke with no known cause. You may join if you are getting a heart monitor device implanted to look for hidden irregular heartbeats.
Cambridge, CambridgeshireAges 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+
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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.