title: Natural course of subarachnoid hemorrhage is worse in elderly patients.
abstract: Aging is a major risk factor for poor outcome in patients with ruptured or unruptured intracranial aneurysms (IA) submitted to treatment. It impairs several physiologic patterns related to cerebrovascular hemodynamics and homeostasis.
  
  
  OBJECTIVE
  Evaluate clinical, radiological patterns and prognostic factors of subarachnoid hemorrhage (SAH) patients according to age.
  
  
  METHODS
  Three hundred and eighty nine patients with aneurismal SAH from a Brazilian tertiary institution (Hospital do Servidor Público Estadual de São Paulo) were consecutively evaluated from 2002 to 2012 according to Fisher and Hunt Hess classifications and Glasgow Outcome Scale.
  
  
  RESULTS
  There was statistically significant association of age with impaired clinical, radiological presentation and outcomes in cases of SAH.
  
  
  CONCLUSIONS
  Natural course of SAH is worse in elderly patients and thus, proper recognition of the profile of such patients and their outcome is necessary to propose standard treatment.
authors.affiliation: Departamento de Neurocirurgia, Hospital do Servidor Público Estadual de São Paulo, São Paulo, SP, Brazil.
authors.forename: Felix Hendrik
authors.initials: FH
authors.lastname: Pahl
authors.affiliation: Departamento de Neurocirurgia, Hospital do Servidor Público Estadual de São Paulo, São Paulo, SP, Brazil.
authors.forename: Matheus Fernandes de
authors.initials: MF
authors.lastname: Oliveira
authors.affiliation: Departamento de Neurocirurgia, Hospital do Servidor Público Estadual de São Paulo, São Paulo, SP, Brazil.
authors.forename: José Marcus
authors.initials: JM
authors.lastname: Rotta
mesh_terms: D000367:Age Factors; D000368:Aged; D017542:Aneurysm, Ruptured / Q000145:classification / Q000000981:diagnostic imaging / Q000503:physiopathology*; D002560:Cerebrovascular Circulation / Q000502:physiology; D005260:Female; D023261:Glasgow Outcome Scale; D006706:Homeostasis / Q000502:physiology; D006801:Humans; D008297:Male; D011379:Prognosis; D011859:Radiography; D012307:Risk Factors; D012720:Severity of Illness Index; D018709:Statistics, Nonparametric; D013345:Subarachnoid Hemorrhage / Q000145:classification / Q000000981:diagnostic imaging / Q000503:physiopathology*; D062606:Tertiary Care Centers