The authors propose a scheme for the estimation of severity of ischemic alterations in the extremity in acute ischemia in order to choose the optimal methods of treatment. In cases of mild ischemia the clinical estimation is sufficient, with the degree of the acute ischemia syndrome taken into account. In cases of severe ischemia the clinical assessment is found to be insufficient. Clear information was obtained by means of microscopic examination of biopsies of muscles by the original express method. Three types of ischemic injuries of the muscular tissue were distinguished as a basis for the estimation of the severity of ischemic alterations.
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