Principles of Aneurysm Surgery in the Acute Stage of Subarachnoid Hemorrhage

Conference paper
Part of the Advances in Neurosurgery book series (NEURO, volume 20)


We experienced 1646 cases of intracranial aneurysms up to the end of 1989; 1519 cases exhibited subarachnoid hemorrhage (SAH). Of these 1519 cases, 171 (11.3%) died of rebleeding while waiting for surgery mostly within 1 week after SAH. The fact has made us consider a possible advantage of early surgery for patients with ruptured aneurysms. However, if we compare the mortality (at 6 months following SAH) of early surgery (within 1 week after SAH) with that of surgery done later than the 1st week, the former was 14.5% (95/655) and the latter was 3.9% (26/674). Therefore, the latter seemed apparently better (Table 1). The latter became 15.2%, however, if the above 11.3% were added to it. Therefore, there was no marked difference in mortality between the two groups, or, one may say, early surgery was a little bit better.


Subarachnoid Hemorrhage Operative Mortality Intracranial Aneurysm Acute Stage Cerebral Vasospasm 
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Copyright information

© Springer-Verlag Berlin Heidelberg 1992

Authors and Affiliations

  • K. Sano
    • 1
  1. 1.Department of NeurosurgeryUniversity of Tokyo, Teikyo University Hospital and Fuji Brain InstituteItabashi-Ku, Tokyo 173Japan

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