The role of infectious and seasonal factors in the development of myocardial infarction in men under 60 years old

Abstract

The influence of seasonal and infectious factors on the risk of an unfavorable outcome in the first 56 days of myocardial infarction, a complicated course of the disease, the development of chronic heart failure of the second functional class and higher during this period was studied. The results of examination and treatment of 556 men 1960 years old with verified type I myocardial infarction were evaluated. The analysis of the risks of an unfavorable outcome, a complicated course of the disease, and the development of chronic heart failure was carried out by the method of multivariate analysis of variance. Chronic foci of infections of the abdominal cavity and kidneys, myocardial infarction in winter, spring and autumn have a moderate negative effect on the prognosis of the disease in the examined. Predictors of unfavorable prognosis are heterogeneous across the seasons. Frequent respiratory infections and chronic inflammatory lung diseases reduce the risk of death in those examined in the first months of myocardial infarction, however, they significantly increase the risk of developing chronic heart failure (bibl.: 19 refs).