[Probabilistic assessment of the severity of the condition of patients with craniocerebral injuries].

The probability of a fatal outcome of the given case is taken for the index of the severity of the injury. The concept of the scale of conditions is introduced and the method for constructing the index of severity, total lethality and structure of the injury depending on the patient's condition is described. Some approaches to the construction of the condition scales are discussed (expert approach, Glasgow's coma scale, probability ratio logarithm scale). The method proposed may be used for individual prognostication of a fatal outcome, dynamic surveillance of patients who are in a grave condition, the formation of groups identical in fatality for comparing different methods of treatment, etc. Assessment of the effect of changes in the structure of a craniocerebral injury on fatality is given in illustration.