[Specific features of myocardial infarction in young and middle-aged subjects].

The aim of the study was to obtain an insight into the origin and specific features of myocardial infarction (MI) in 322 subjects below 60 yr of age. Most patients had anginous complaints. The incidence of non-anginous forms of MI in patients aged below 45 and 46-60 years was estimated with reference to the occurrence of complications. The structure of these complications and causes of their fatal outcome were elucidated. The prevalence of risk factors of MI in the survivors and patients who died was obtained.