Subarachnoid hemorrhage from ruptured intracranial aneurysms. Timing of pathophysiological events and surgery. A survey

The timing of the pathophysiological events following subarachnoid hemorrhage from ruptured intracranial aneurysms is surveyed in the light of recent data reported in the literature. The natural history, the rate of rebleeding, pathogenesis of vasospasm and its clinical significance are discussed. These items are related to the most common neurodiagnostic examinations. On the basis of the above-mentioned considerations, more effective therapeutic strategies, now under evaluation, are required.