A rare cause of myocardial infarction: coronary embolism in a patient with prosthetic mitral valve thrombosis

Since the patient was young, had no coronary risk factors and had an INR of 1.6, myocardial infarction was thought to be due to coronary embolism. In the pathogenesis of mechanical valve thrombosis, caged-ball valves, age >70 years, atrial fibrillation, depressed left ventricle systolic function, pregnancy, some drugs, carcinoma, systemic diseases, defects on the surface of the mechanical valve and insufficient anticoagulation can all play a role [5,6].