[The information value of the EEG in the acute period of subarachnoid hemorrhage as a consequence of rupture of intracranial aneurysms].

The article deals with the results of electroencephalographic (EEG) examination of 65 patients in the acute period of subarachnoid hemorrhage of nontraumatic genesis. The revealed changes in the electrical activity of the brain are compared with the level of disturbed consciousness, the severity of the clinical condition, and the presence of complicated or noncomplicated form of subarachnoid hemorrhage. The main factors determining the degree of disorders of the EEG pattern are discussed. It is shown that the EEG data possess high prognostic significance in determining the outcome of operative treatment of patients in the acute period of the disease.