title: The unchanging pattern of subarachnoid hemorrhage in a community.
abstract: The average annual incidence of subarachnoid hemorrhage (SAH) from aneurysm rupture in Rochester, Minnesota, has remained remarkably constant at about 11 per 100,000 population. Age-specific incidence increased with age. Survival after SAH depended on: (1) clinical grade, (2) time after onset of SAH, and (3) presence of intracerebral hematoma. Among those who survived to receive medical attention, 48% were clinical grade 1 or 2, 20% were grade 3, and 32% were grade 4 or 5. Proved rebleeding occurred within 10 days of the first SAH in 20% of patients who survived until hospital admission.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D002532:Intracranial Aneurysm / Q000150:complications; D008297:Male; D008875:Middle Aged; D008910:Minnesota; D011379:Prognosis; D013345:Subarachnoid Hemorrhage / Q000453:epidemiology* / Q000209:etiology / Q000601:surgery