The cardiovascular system was examined in acute, subacute and chronic intoxications with nitroglycerin. It was revealed that morphofunctional alterations were uniform in nature, being more demonstrable in chronic exposure during 6 months. Myocardial alterations were characterized by disturbed hemodynamics, dystrophy, focal myocarditis, changes in the activity of enzymes, and changes in the electrocardio- and rheovasographic readings. Prolonged intoxication produced more profound and stable alterations.
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