[EEG changes in response to dehydration depending on the extent of intracranial hypertension].

The authors examined 30 patients with intracranial hypertension caused by brain tumor who received 1 g/kg mannitol for dehydration. It was found that dehydration improves the function of the brain in the stage of subcompensation but makes it worse in the stage of decompensation. This has an effect both on the patients' general condition and on the EEG. The response of the healthy hemisphere to the administration of mannitol differed significantly from that of the involved hemisphere. Indications were determined for prescribing dehydration therapy according to the clinical stage of intracranial hypertension.