[State of the myocardium under the effect of high temperature of the environment (a clinico-experimental study)]

The labour conditions in heat treatment shops caused the sympathetic-adrenal system's tension which was preserved in the rehabilitation period and led to ECG functional shifts. The probable traces of IHD and myocardium hypoxia were 2.7 times as often as in the workers engaged in general shops. The cardiomyocytes' damages were proved by higher levels of creatine phosphokinase and lactate dehydrogenase in the blood of heat treatment shop workers.