A series of 269 patients with ruptured cerebral aneurysm over the last five years were analyzed. This series consists of 227 patients whose operations were delayed for about 2 weeks, 17 patients with intracerebral hematoma in acute operation and 25 patients without treatment because of severe grade clinically (Hunt & Kosnik Grade V ). In the group whose operations were delayed 2 weeks, the rate of ADL 1 and 2 is 93.3% in Hunt & Kosnik Grade I, 77.7% in Grade II, 67.2% in Grade III and 52.6% in Grade IV. And also the rate of ADL 1 and 2 is 94.4% in Fisher Group 1 on CT scan, 84.2% in Group 2, 68.5% in Group 3 and 72% in Group 4. The factors of poor prognosis in ADL 3, 4 and 5 are 8.8% in the rerupture, 8.4% in the vasospasm, 6.2% in the complication and 1.8% in the operation technique. In all patients with ruptured cerebral aneurysm, the rate of 1 and 2 is 65.4% of 269 patients. The factors of poor prognosis in ADL 3, 4 and 5 and 12% in the initial attack, 7% in the rebleeding, 6% in the vasospasm, 6% in the complication and 2% in the operation technique.
