Epidemiology of aneurysmal subarachnoid hemorrhage

Neurosurg Clin N Am. 2010 Apr;21(2):221-33. doi: 10.1016/j.nec.2009.10.002.


Aneurysmal subarachnoid hemorrhage (aSAH) is a form of hemorrhagic stroke that affects up to 30,000 individuals per year in the United States. The incidence of aSAH has been shown to be associated with numerous nonmodifiable (age, gender, ethnicity, family history, aneurysm location, size) and modifiable (hypertension, body mass index, tobacco and illicit drug use) risk factors. Although early repair of ruptured aneurysms and aggressive postoperative management has improved overall outcomes, it remains a devastating disease, with mortality approaching 50% and less than 60% of survivors returning to functional independence. As treatment modalities change and the percentage of minority and elderly populations increase, it is critical to maintain an up-to-date understanding of the epidemiology of SAH.

Publication types

  • Review

MeSH terms

  • Age Distribution
  • Demography*
  • Genetic Predisposition to Disease / epidemiology
  • Humans
  • Hypertension / epidemiology
  • Obesity / epidemiology
  • Racial Groups
  • Risk Factors
  • Sex Distribution
  • Stroke / diagnosis
  • Stroke / epidemiology*
  • Stroke / surgery
  • Subarachnoid Hemorrhage / diagnosis
  • Subarachnoid Hemorrhage / epidemiology*
  • Subarachnoid Hemorrhage / surgery
  • Tobacco Use Disorder / epidemiology