[Electron microscopic changes in the myocardium in experimental carbon monoxide poisoning].

Effect of coal-gas poisoning on the myocard was studied by the aid of electron microscope and electronmicroscopic histochemistry. Alterations revealed can not be regarded as specific ones, they seem to be of hypoxic origin. Activity of the cytochromoxidase--as revealed by electronmicroscopic histochemistry--in cases of coal-gas poisoning decreases. Specificity of the cytochromoxidase method and the leadsalt method of the demonstration of calcium are discussed.