Direct Oral Anticoagulants for Prevention of lEft ventRIcular Thrombus After Anterior Acute Myocardial InFarction - APERITIF

Prior treatment

• Patients referred to surgery for coronary artery bypass grafting (CABG) or treatment of acute complications (e.g. ventricular septal rupture);
• Patients treated with fibrinolytic therapy;
• Known intolerance to aspirin, P2Y12 inhibitors, rivaroxaban and their excipients;

Other illness

• Active major bleeding or major surgery within the last 30 days;High bleeding risk (patients considered at increased risk of bleeding during DAPT; e.g. PRECISE-DAPT score \>25; severe liver failure or Child Pugh class C);
• Known history of intracranial hemorrhagic stroke or intra-cranial aneurysm;
• Known history of peptic ulcer;
• Known stroke (any type) within the last 30 days;
• Patients with presence of malignant neoplasms at high risk of bleeding
• Patients with hepatic impairment

Lab values

• Chronic kidney disease (creatinine clearance (ClCr) \<30 mL/min);

Other

• Patients with cardiogenic shock (systolic blood pressure \<90 mmHg with clinical signs of low output or patients requiring inotropic agents);
• LV thrombus diagnosed before randomization using a transthoracic echocardiography;
• According to the SmPC any contraindication to rivaroxaban, aspirin, clopidogrel, ticagrelor
• Known intolerance to gadolinium chelates;
• Indication for anticoagulation (e.g. atrial fibrillation, mechanical valves, LV thrombus…);
• Life expectancy \<1 month;
• Known pregnancy at time of randomization (pregnancy test done) or breastfeeding women;
• Currently participating in another trial
• Protected adults (including individual under guardianship by court order)
• Persons deprived of their liberty by judicial or administrative decision

• Age ≥ 18 years;
• Anterior STEMI (e.g., ST elevation above the J-point of ≥0.1 millivolt in ≥two contiguous leads or left bundle branch block) or very high-risk NSTEMI (e.g., dynamic ECG changes or ongoing chest pain or acute heart failure or hemodynamic instability independent of ECG changes or life-threatening ventricular arrhythmias) with echographic evidence of anterior wall motion abnormalities and, with a culprit lesion of the proximal or mid portion of the left anterior descending (LAD) on the coronary angiography;
• No contraindication to CMR (e.g., claustrophobia, pacemaker or defibrillator not compatible);
• Ability to provide written informed consent and willing to participate in 1-month follow-up period.
• Affiliation of social security regime.