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蛛网膜下腔出血是由于脑表面的血管破裂出血,血液直接流入蛛网膜下腔引起。临床上突然发生剧烈头痛、恶心、呕吐,可有一过性的意识障碍,检查有明显的脑膜刺激征,一般无定位体征,腰穿为血性脑脊液。本病可发生于任何年龄,但以青壮年人为多。过去认为是一种少见疾患,近十年来,就诊病人有显著增加。蛛网膜下腔出血的发病率占脑血管疾病的10%。
Subarachnoid hemorrhage is due to rupture of the blood vessels on the surface of the brain, causing blood to flow directly into the subarachnoid space. Sudden severe clinical headache, nausea, vomiting, may have transient disturbance of consciousness, check the obvious signs of meningeal irritation, the general positioning signs, waist wear bloody cerebrospinal fluid. The disease can occur at any age, but mostly young adults. In the past, it was considered as a rare disease and the number of visiting patients increased significantly in the past decade. The incidence of subarachnoid hemorrhage accounted for 10% of cerebrovascular disease.