RESUMO
Authors analyzed 173 patients diagnosed as and treated for aneurysmal subarachnoid hemorrhage at the Department of Neurosurgery in Presbyterian Medical Center, Chonju and Yonsei University College of Medicine, Seoul, from January 1, 1985 to December 31, 1986. Results of the analysis are summarized as follows; 1) The electrolyte imbalance and delayed ischemic deficit have significant relationships. They have higher incidence in ruptured aneurysms adjascent to hypothalamus, onset at similar time and have tendency to accompany each other. 2) The precipitating factors of vasopasm and electrolyte imbalance have significant relationships. The incidence of electrolyte imbalance is higher in the group of high Hunt & Hess grade, high Fisher grade, presence of basal cistern hemorrhage. 3) Inspite of ordinary fluid and sodium supplement, the hyponatremia group has the same prognosis as group with normal electrolyte concentration, and duration of hyponatremia is not prolonged compared to the group with strict fluid restriction as presented by other authors.