Heart bypass patients: which blood thinner works best to keep grafts open?
NCT ID NCT07195149
First seen Jun 27, 2026 · Last updated Jul 15, 2026 · Updated 2 times
Summary
This study tests whether taking two blood thinners (prasugrel plus low-dose aspirin) for three months after heart bypass surgery is better than taking aspirin alone (either low or high dose) at preventing graft failure. About 1,700 adults with stable coronary artery disease who need bypass surgery will participate. The goal is to find the safest and most effective way to keep new blood vessel grafts working long-term.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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Phase 3
Large-scale testing in a bigger group. Usually the last step before a treatment can be approved.
- Participants
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About 1,703 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Nov 2025
- Expected to finish
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Nov 2030
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: A. Baseline (preoperative) inclusion criteria 1. Age \>18 years 2. Primary isolated CABG patients with stable coronary artery disease (chronic coronary syndrome) planned for at least 2 grafts. Coronary artery disease will be defined as a stenosis ≥ 70% based on coronary angiography, a FFR value ≤ 0.80 or iFr value ≤0.89; a left main diameter stenosis ≥ 50%, left main IVUS MLA value ≤ 6 mm2, or equivalent OCT measurements will also be considered. 3. Ability to comply with all study procedures and follow-up procedures 4. Signed Informed Consent to participate in the study. B. Operative inclusion criteria: 1. Intraoperative graft evaluation using transit time flow measurement in all grafts, normal flow in any graft is defined as mean graft flow \> 15 mL/min with Pulsatility Index \< 5 2. Left anterior descending artery grafted with internal thoracic artery 3. No intraoperative decision for hybrid revascularization due to incomplete revascularization (Percutaneous coronary intervention (PCI) of the ungrafted vessel) 4. No endarterectomy of the grafted vessel performed 5. Patient did not have any additional unplanned procedure (Ex. LAAC, Ablation, valve intervention, aortic intervention) Exclusion Criteria: A. Baseline (preoperative) exclusion criteria: 1. Cardiogenic shock 2. Patients with recent acute coronary syndrome (ACS) (\<12 months) 3. Single vessel CABG 4. Patients with preoperative atrial fibrillation 5. Dialysis 6. Thrombocytopenia (platelet count \< 100 000 platelets/uL) 7. Anemia (Hemoglobin level \< 10 g/dL) 8. Severe liver failure Child-Pugh classification \>4 9. Known, active infections with HIV, HBV, HCV, tuberculosis 10. Active malignant disease or history of malignancy within the past 5 years 11. Indication for DAPT (e.g. recent PCI or ACS or recent stents of peripheral arteries) 12. Indication for oral anticoagulant treatment 13 Indications for the use of methotrexate at a dose of 15 mg/week or more 14\. Any contraindication for prasugrel or ASA 15. Planned additional cardiac or non-cardiac surgery within 12 months 16. Non-cardiac co-morbidity with life expectancy less than 12 months 17. History of any bleeding complications due to the use of DAPT 18. History of intracranial bleeding 19. History of gastro-intestinal bleeding 20. Pregnancy or breastfeeding 21. Lack of compliance with the use of a highly effective method of birth control 22. Planned coronary endarterectomy 23. Severe impaired renal function (eGFR \<40mL/min/1.73 m2). B. Postoperative and prior randomization exclusion criteria: 1. Perioperative cardiogenic shock 2. Intraoperative death or death prior randomization 3. Myocardial infarction within 12-24 hours following CABG or prior randomization 4. Ischemic or hemorrhagic stroke within 12-24 hours following CABG or prior randomization 5. Any postoperative complication that may increase patients' risk with DAPT 6. Atrial Fibrillation prior randomization 7. Gastro-intestinal bleeding prior randomization
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
14 sites. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Central Clinical Hospital of the Ministry of Interior and Administration
ACTIVE_NOT_RECRUITINGWarsaw, Poland
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Institute of Medical Sciences in Opole
NOT_YET_RECRUITINGOpole, Poland
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J. Struś Hospital
NOT_YET_RECRUITINGPoznan, Poland
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John Paul II Hospital
NOT_YET_RECRUITINGKrakow, Poland
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Medical University of Gdansk
NOT_YET_RECRUITINGGdansk, Poland
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Medical University of Lodz
NOT_YET_RECRUITINGLodz, Poland
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Medicover Hospital
RECRUITINGWarsaw, Poland
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Nicolaus Copernicus University Ludwik Rydygier Collegium Medicum in Bydgoszcz
NOT_YET_RECRUITINGBydgoszcz, Poland
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Pomeranian Medical University
NOT_YET_RECRUITINGSzczecin, Poland
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Poznan University of Medical Sciences
ACTIVE_NOT_RECRUITINGPoznan, Poland
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Provincial Specialist Hospital in Olsztyn
NOT_YET_RECRUITINGOlsztyn, Poland
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Regional Specialist Hospital in Grudziadz
NOT_YET_RECRUITINGGrudziądz, Poland
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Silesian Centre for Heart Diseases in Zabrze
RECRUITINGZabrze, Poland
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University Clinical Hospital in Bialystok
NOT_YET_RECRUITINGBialystok, Poland
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Upper-Silesian Heart Center
ACTIVE_NOT_RECRUITINGKatowice, Poland
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Wroclaw Medical University
ACTIVE_NOT_RECRUITINGWroclaw, Poland
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Zbigniew Religa Heart Center "Medinet"
RECRUITINGNowa Sól, Poland
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Zbigniew Religa Heart Center "Medinet"
RECRUITINGWroclaw, Poland
More trials for these conditions
Other studies related to the condition(s) this trial covers.
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- Can a trained eye match ultrasound for heart stent placement?
- Could a quicker, cheaper scan replace the gold standard for heart blood flow?