[The effect of elevated environmental temperature on the development of a potassium deficiency in the body].

Electron microscopy and roentgen microanalysis were used to study the ultrastructure and electrolytic balance of K+, Na+ and Cl- of the animal myocardial tissue during general body hyperthermia. It was established that long-term effect of heating microclimate causes a distinct reduction of K+ in the cardiomyocytes accompanied by essential changes of the ultrastructure of ischemic character.