PROGNOSIS OF SUBARACHNOID HEMORRHAGE

Abstract

Following the definition of. the syndrome of subarachnoid hemorrhage by Symonds¹in 1923, its recognition has presented little difficulty. Excellent descriptions of the syndrome and summaries of the literature have been presented by Strauss, Globus and Ginsburg,²Sands³and Dandy.⁴ Subarachnoid hemorrhage is responsible for 2 per cent of sudden deaths.⁵It comprises 7 per cent of all cerebral vascular disease and approximates in frequency parenchymatous cerebral hemorrhage (8 per cent).⁶The most common cause of subarachnoid hemorrhage is rupture of intracranial arterial aneurysms. Among others the studies of Bremer,⁷Forbus,⁸McDonald and Korb,⁹Richardson and Hyland¹⁰and Magee¹¹have contributed much to our knowledge of the formation, occurrence and natural history of intracranial arterial aneurysms and their role in the production of subarachnoid hemorrhage. Dandy⁴has recently reported his pioneer work in the surgical treatment of intracranial