Coronary risk factors of myocardial infraction in young adults

The coronary risk factors of 14 yong patients with myocardial infarction (YMI) were compared with those of 24 young patients with non-ischemic heart disease (C-1), and with those od 245 patients of middle or adcanced age with myocardial infarction (C-2). The incidence of myocardial infarction in young adults was 3.8% of all patients with myocardial infraction for the last 6 years. Cigarette smoking, hypercholesterolemia, family history of coronary artery disease and hypertension were more frequent in YMI than in C-1. The mean number of coronary risk factors in YMI (＝2.9±1.0) was significantly more than that in C-1 (＝1.7±1.1), but was not significantly more than that in C-2 (＝2.7±1.0). In YMI, multivariate linear regression analysis used in order to assess the influence of coronary risk factors on the severity of coronary artery lesions showed that multiple correlation was 0.5594, and there were no independent risk factors. These finding suggest that the incidence of mycardial infarction in young is concerned with overlapping of coronary risk factors as the elder meocardial infraction.