[Left coronary artery embolism resulting from ineffective anticoagulation in a patient suffering from dilated cardiomyopathy as a possible cause of myocardial infarction--a case report].

We present a case of a 58-year-old male being treated for dilated cardiomyopathy and atrial fibrillation for more than ten years who was admitted to the intensive care unit with the diagnosis of acute ST-segment elevation myocardial infarction (STEMI). In course of further diagnostics the coronary artery embolism resulting from the unintentional anticoagulant drug (acenocumarol) dose reduction was established as the most probable cause of STEMI. Primary percutaneous coronary intervention was successfully performed and the patient was discharged home in good clinical condition.