Abstract
To treat ruptured aneurysm in acute phase, spinal drainage was performed in all patients except for a few who already showed signs of tentorial herniation. Spinal drainage was placed on the day of admission and flow rate was strictly controled 5ml-10ml/hr, which means about 200ml CSF was removed per 24 hours. Surgical treatment was done usually on the second day. Spinal drainage was removed at about 7 days after operation. The result was quite satisfactory. Although temporary or mild vasospasm was encountered, no severe vasospasm causing permanent morbidity was experienced. Morbidity was attributed to temporary blood flow shut down over 15 minutes or low blood pressure under 60 mmHg in systolic pressure during surgery. Over 80 percent of patients were discharged without any neurological deficit.
