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Background : Coronary artery bypass grafting ( CABG ) remains the gold standard in the treatment of complex chronic forms of coronary heart disease ( CHD ). Coronary endarterectomy ( CEAE ) is a useful adjunctive technique to  CABG  in patients with diffuse coronary artery disease. In order to maintain the patency of the coronary arteries and graft conduits, various antithrombotic protocols have been introduced over the years, combining various antiplatelet and anticoagulant drugs, but still there is no consensus.Aim : The aim of the study is to compare results between two antithrombotic regimens after  CEAE . The first one is a combination of acenocoumarol combined with acetylsalicylic acid ( ASA ), the second regimen is a dual antiplatelet therapy ( DAPT ) of clopidogrel combined with  ASA .Material and methods : We retrospectively reviewed 56 consecutive patients (60 ± 8.2 years) undergoing isolated  CABG  in association with  CEAE  between January 2018 and December 2019. In the postoperative period, patients were divided into two groups according to the antithrombotic regimens described above. Twenty-four were in the  ASA  and acenocoumarol group ( AA ) and 32 were in the  ASA  and clopidogrel group ( AC ). Patients were followed up to 30 days after the operation and we access the mortality rate, new ECG changes, levels of myocardial fraction of creatinine phosphokinase (CPK-MB), left ventricular systolic function, pericardial or pleural effusions requiring drainage or revision for bleeding.Results : Operative mortality was 3,6 %. No differences in the antithrombotic efficacy of the two regimens. A significantly higher level of hemorrhagic complications was observed in the  ASA  + acenocoumarol treatment group.Conclusion : Dual antiplatelet therapy ( DAPT ) after  CABG  and coronary endarterectomy is an effective pharmacological regimen in regard to 30-day postoperative outcomes and is considerably safety in terms of bleeding complications.

Antithrombotic regimens in patients after coronary artery bypass grafting and coronary endarterectomy