title: Survival probability, delayed mortality, and relationship between short-term outcome and long-term survival after aneurysmal subarachnoid hemorrhage.
abstract: The long-term survival probability, causes of delayed mortality, and relationship between short-term outcome and long-term survival after aneurysmal subarachnoid hemorrhage were retrospectively studied in 106 patients followed up for longer than 5 years. The Kaplan-Meier cumulative survival probabilities at 1 month, 6 months, and 5 years were 85.9%, 79.2%, and 66.8%, respectively. Six months after the onset, 41 patients made a good recovery (GR) and 34 were moderately disabled (MD). On the last follow-up day, 64 had good outcome (GR or MD) and eight had died. In contrast, there were nine patients with poor 6-month outcome (severe disability or vegetative state), seven of whom died within 5 years. Five of these seven patients had experienced intraventricular hemorrhage (IVH) on admission. A total of 15 patients died beyond 6 months, five died of complications related to shunts. Six-month outcome is a predictor of long-term survival and delayed mortality. Improved long-term survival requires the development of better management for IVH, improved 6-month outcome, and careful follow-up of patients who undergo shunting.
authors.affiliation: Department of Neurosurgery, Kochi Medical School.
authors.forename: T
authors.initials: T
authors.lastname: Mori
authors.forename: K
authors.initials: K
authors.lastname: Mori
authors.forename: M
authors.initials: M
authors.lastname: Kurisaka
authors.forename: M
authors.initials: M
authors.lastname: Morimoto
mesh_terms: D000328:Adult; D000368:Aged; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D002532:Intracranial Aneurysm / Q000401:mortality* / Q000503:physiopathology; D008297:Male; D008875:Middle Aged; D013345:Subarachnoid Hemorrhage / Q000401:mortality* / Q000503:physiopathology; D016019:Survival Analysis; D013997:Time Factors