Risk of bleeding from unruptured aneurysm in cases with multiple intracranial aneurysms

J Neurosurg. 1981 Oct;55(4):524-6. doi: 10.3171/jns.1981.55.4.0524.


The author presents a follow-up review of 61 patients with subarachnoid hemorrhage (SAH) and at least two intracranial artery aneurysms in whom only the ruptured aneurysm had been clipped. During a 10-year follow-up period, seven patients bled from a previously unruptured aneurysm; four of the hemorrhages were fatal. Three additional patients suffered fatal bleeding more than 10 years after the first SAH. The surgical mortality rate when operating on a ruptured aneurysm at this clinic was 4.2% in 1979. Considering that the mortality rate after rebleeding during an average follow-up period of 16 years was 11.5%, operation for unruptured aneurysms seems to have a slight edge over conservative treatment.

Publication types

  • Case Reports
  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Adolescent
  • Adult
  • Cerebral Hemorrhage / etiology*
  • Female
  • Follow-Up Studies
  • Humans
  • Intracranial Aneurysm / complications
  • Intracranial Aneurysm / mortality
  • Intracranial Aneurysm / surgery*
  • Male
  • Middle Aged
  • Risk
  • Rupture, Spontaneous
  • Subarachnoid Hemorrhage / complications
  • Subarachnoid Hemorrhage / surgery