Phase 4 Atrial Fibrillation Trial, Recruiting
Who may be able to join
AI generated eligibility summary. Written by an AI model from the official source data and checked on a sample basis. It can contain mistakes, so confirm anything important against the original source. How we use AI
Who might be able to join this trial:
- People who have been diagnosed with atrial fibrillation (an irregular heartbeat) that is not caused by a faulty or mechanical heart valve
- People whose stroke risk score (called CHA2DS2-VA) is 2 or higher, indicating a moderate to high risk of stroke
- People who meet the medical guidelines for having a left atrial appendage closure (LAAC) procedure, including those at higher risk of bleeding
- People who have already had a successful LAAC procedure, meaning the device was placed without significant leakage or serious complications
- People whose heart anatomy is compatible with a specific closure device called the Boston Scientific WATCHMAN FLX Pro
- People who are able to take the specific blood-thinning or antiplatelet medications required by this study
- People who are willing and able to attend all required follow-up visits after the LAAC procedure
- People who have been fully informed about the study and have signed a written consent form to participate
Who may not be able to join:
- People who are currently enrolled in another clinical trial (participation in government-required or observation-only registries without any associated treatment may be acceptable — confirm with trial site)
- People who need long-term blood thinners for reasons unrelated to atrial fibrillation, such as a history of blood clots in the lungs or legs, or a clotting disorder
- People who need ongoing antiplatelet medicines (such as aspirin or similar drugs) for reasons other than the LAAC procedure, for example due to a past heart attack, stroke, mini-stroke, significant narrowing of the arteries, or a blood disorder
- People who cannot take blood-thinning medications (DOACs or warfarin-type medicines), cannot take aspirin, or have a known allergy to aspirin
- People who have had, or are planned to have, a heart or non-heart procedure or surgery within 45 to 60 days before or after the LAAC procedure (for example, a heart rhythm procedure, heart stenting, cataract surgery, or similar)
- People who have had a stroke or mini-stroke (TIA) within the 30 days before enrolling in the trial
- People who are currently experiencing active bleeding
- People who do not have a left atrial appendage, or whose left atrial appendage has already been surgically closed
- People who have had a heart attack in the 30 days before enrolling in the trial
- People who have previously had a repair to the wall between the heart's upper chambers, or who have a device already in place to close a hole in that wall
- People who have a mechanical heart valve anywhere in the heart
- People who cannot undergo a trans-oesophageal echocardiogram (a type of heart imaging done via the throat) due to a known medical reason
- People who have an active infection at the time of the trial
- People who have severe heart failure classified as the most serious level (NYHA Class IV) at the time of enrolment
- People who are pregnant, breastfeeding, or planning to become pregnant
- People whose life expectancy is less than 2 years
- People who need emergency surgery for any reason
- People who, in the treating doctor's judgement, have medical, personal, or psychological circumstances that would prevent them from safely following the study requirements
- People whom the trial doctor considers unsuitable for participation for any other reason
Important: Always verify eligibility with the trial site directly before applying.
Based on publicly available eligibility criteria from ClinicalTrials.gov. Verify directly with the trial site before acting. This is not medical advice.
Contact this trial
Phone: +81-6-7176-5731
Contact details sourced from ClinicalTrials.gov. Verify directly with the trial site before attending.
GP referral letter
Print a one-page summary to share with your doctor.
Trial details
Where this trial is recruiting
Primary endpoints
A composite endpoint consisting of all-cause mortality, myocardial infarction, stroke, systemic embolism, major bleeding, or clinically relevant non-fatal bleeding
Can't join this trial?
Data last synced from ClinicalTrials.gov: 22 July 2026. Trial status can change. Always verify current status directly with the trial site before making any decision.