Timing of surgery for ruptured aneurysms—Experience from 800 consecutive cases

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Abstract
In the Department of Neurosurgery, University of Vienna, about 800 patients with intracranial aneurysms have been operated since 1958. The distribution of age, sex, and the localization of the aneurysms correspond roughly to the international statistics. From our experience it is apparent that the level of consciousness and responsiveness is the most important factor in deciding the choice and time of treatment on the one hand and the further fate of the patient on the other. The authors therefore use some modification of the five-grade system of Hunt and Hess to stress the importance of the level of consciousness and the neurological deficits.