Statistical characteristics of blood flow and gas exchange parameters in patients with craniocerebral injury grouped in a different manner according to the severity of the contusion, the state of consciousness, and the general condition were obtained by electric computer processing of the results of studying hemispheric blood flow by means of 133Xe clearance in 86 cases, oxygen consumption by the brain in 36 cases, and carbon dioxide excretion by the brain by Van Slyke's method in 75 cases. A close correlation was revealed between the state of the patient's consciousness and the parameters of cerebral blood flow and gas exchange; compression in severe brain contusion was found to have a statistically significant effect on cerebral blood flow and gas exchange.
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