[Acute myocardial infarct and thyrotoxicosis. A report of a new case].

The presence of an acute myocardial infarction in a premenopausal woman without any known coronary artery disease risk factors, rules out other non atherosclerotic causes of coronary lesion. Hyperthyroidism and ischemic heart disease are well related clinically, but for pathophysiological reasons, still under discussion. Here, we present the case of a young woman with typical heart disease symptoms and an absence of initial electrocardiographic alterations, who is diagnosed as having a transmural myocardial infarction. The later anamnesis and the laboratory results allowed a hyperthyroidism diagnosis to be made. What follows is a selection of some of the limited contributions to AMI literature dealing with hyperthyroidism, as well as the possible mechanisms described up to now.