Anticoagulation for New-Onset Post-Operative Atrial Fibrillation After CABG
This research is looking for the safest and most effective way to prevent serious problems like strokes and blood clots, while also trying to avoid bleeding, in people who develop a specific type of irregular heartbeat called atrial fibrillation after heart bypass surgery. Doctors are comparing two common strategies: using only a type of medication called 'antiplatelets' or using antiplatelets alongside an 'oral anticoagulant' (a stronger blood thinner). The study will follow patients for a few months after their surgery to see which approach works best for preventing clots and minimizing bleeding risks. This helps doctors make informed decisions for future patients.
At a glance
What is this study about?
Imagine you've just had heart bypass surgery to improve blood flow to your heart. Sometimes, after this type of surgery, some people develop an irregular heartbeat called 'atrial fibrillation' (or AF for short). While often temporary, AF can increase the risk of serious issues like strokes, which are caused by blood clots. On the other hand, taking strong medications to prevent clots, often called 'blood thinners' or 'anticoagulants', can increase the risk of bleeding. This study aims to find the right balance.
Researchers want to understand if adding a stronger type of blood thinner (an 'oral anticoagulant') to the usual antiplatelet medication is better at preventing clots like strokes, compared to just using antiplatelet medication alone. They will also carefully watch for any serious bleeding that might occur with either treatment. By comparing these two common treatment approaches, the study hopes to give doctors clearer guidance on how to best protect patients who develop AF after bypass surgery, ensuring they get the most effective treatment with the fewest side effects.
This is a 'Phase 3' study, which means it's a larger study designed to confirm the effectiveness and safety of treatments that have already shown promise in earlier stages. The results from this research will help improve care for many people in the future who undergo similar heart operations.
Key takeaways
- This study evaluates treatments for irregular heartbeats (AF) after heart bypass surgery.
- It compares two blood-thinning strategies: antiplatelets only vs. antiplatelets plus oral anticoagulants.
- The goal is to find the best balance between preventing blood clots (like strokes) and avoiding bleeding.
- Participation involves taking medication and attending follow-up appointments and phone calls.
- The study lasts about 90 days for treatment, with follow-up calls up to 180 days.
Who may be eligible?
To join this study, you would need to be 18 years old or older and have recently had heart bypass surgery (a CABG). A key part of joining is that you must have developed a new irregular heartbeat, known as atrial fibrillation (AF), after your surgery. This AF must have lasted for more than an hour or have happened more than once within seven days after your operation.
However, there are also some reasons why you wouldn't be able to join. For example, if you already had AF before your bypass surgery, or if you already need to take long-term blood thinners for another reason, you wouldn't be eligible. Also, if you have certain medical conditions that make blood thinners unsafe for you, or if you had serious complications right after your surgery (like a stroke or major bleeding), you would not be able to participate. If you need to have a specific type of antiplatelet treatment after your surgery, or if you're pregnant, you also wouldn't qualify.
The research team will review your medical history carefully to make sure the study is a good fit for you and that it's safe for you to take part. They will explain everything in detail if you are interested.
Could this study suit you?
Answer these quick questions to see if you may be eligible. This is a guide only — the research team makes the final call.
- Are you 18 years old or older?
- Have you recently had heart bypass surgery (CABG)?
- Did you develop a new irregular heartbeat (atrial fibrillation) after your surgery?
- Do you *not* already take long-term blood thinners for another health reason?
- Do you *not* have any health conditions that make blood thinners unsafe for you?
- Are you *not* pregnant?
What does participation involve?
If you decide to take part in this study, you would be randomly assigned to one of two groups, like flipping a coin. One group will receive an oral anticoagulant medication in addition to a standard antiplatelet drug (like aspirin), while the other group will receive an antiplatelet drug only. The study team will tell you which medications to take, usually for about 90 days. You will continue to take your regular antiplatelet medicine as prescribed by your doctor.
The study involves several check-ups. You'll have an in-person visit around 90 days after you start the study. There will also be phone calls to check on you and your health at 30 days, 60 days, and 180 days. These calls and visits are important for the research team to monitor how you're feeling, if the treatment is working, and to check for any side effects or new health issues. The full study is expected to take about five years to collect enough information from all patients.
Potential risks and benefits
Locations (101)
- CHI St. Vincent, ArkansasVerified postcodeLittle Rock, United States· Recruiting
- University of Southern CaliforniaVerified postcodeLos Angeles, United States· Recruiting
- Cedars-Sinai Medical CenterVerified postcodeLos Angeles, United States· Recruiting
- Stanford UniversityVerified postcodeStanford, United States· Recruiting
- Medical Center of AuroraVerified postcodeAurora, United States· Active not recruiting
- Western Connecticut Hospital SystemsVerified postcodeDanbury, United States· Active not recruiting
- Yale MedicineVerified postcodeNew Haven, United States· Recruiting
- MedStar Washington Hospital CenterVerified postcodeWashington D.C., United States· Recruiting
- Emory UniversityVerified postcodeAtlanta, United States· Recruiting
- Piedmont Healthcare Inc.Verified postcodeAtlanta, United States· Recruiting
- Lutheran Medical CenterVerified postcodeFort Wayne, United States· Recruiting
- Indiana UniversityVerified postcodeIndianapolis, United States· Recruiting
Common questions
What is 'atrial fibrillation'?
It's a type of irregular and often very fast heart rhythm that can increase the risk of stroke.
What is 'CABG'?
CABG stands for Coronary Artery Bypass Graft. It's an operation to improve blood flow to your heart.
What's the difference between an 'antiplatelet' and an 'oral anticoagulant'?
Both are blood thinners, but oral anticoagulants are generally stronger and are used to prevent more serious clots, while antiplatelets usually prevent smaller clots.
Will I know which treatment I'm getting?
Yes, this is an 'open-label' study, meaning both you and your doctors will know which treatment you are receiving.
What happens if my AF comes back during the study?
If your AF returns after 30 days and you were in the antiplatelet-only group, your doctors may switch you to the stronger blood thinning treatment (oral anticoagulant).
How to find out more
Ellen Moquete, RN
Always speak to your GP or specialist before deciding to take part in a study.
Interested in taking part?
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