Acute Myocardial Infarction Caused by Left Main Coronary Artery Compression as a Result of a Mycotic Aneurysm of the Sinus of Valsalva.

An 83-year-old woman with a history of fever presented with severe chest pain progressing to cardiogenic shock. Her electrocardiogram showed evidence of anteroseptal myocardial infarction (MI). Urgent coronary angiography, with intra-aortic balloon pump support, indicated total occlusion of the left