A total number of 1924 patients were treated for acute myocardial infarction (AMI) at the Clinic for Urgent Medicine at the Military Medical Academy during the period of seven years (1991-1997). These myocardial infarctions were at different locations, the mean age of patients was 63.7 +/- 6.2, in male patients 1192 (61.9%) and 732 (38.1%) in female ones. Out of that number of patients, 406 (21.1%) had recurrent myocard infarction (RMI), 254 (62.6%) males and 152 (37.4%) females, of average age 64.8 +/- 8.3 years. Statistically, no significant differences were observed in those two groups of patients, concerning their age, location of myocardial infarction and administration of fibrinolytic therapy. There were, however, significant differences concerning the complications, primarily cardiac insufficiency, malignant arrhythmias, AV block II0 and III0, applications of temporary or permanent pacemaker and finally mortality. During intrahospital phase of treatment, in the first few months, obtained results revealed that the patients suffering from RMI had multiple and serious complications and that cardiac insufficiency was the main cause of high mortality rate in those patients.