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蛛网膜下腔出血(SAH)可证实的原因有囊状动脉瘤破裂、颅内和椎管内动静脉畸形破裂、高血压性出血、颅内肿瘤出血、血液病及头部外伤后。用目前可靠的神经放射学技术包括CT扫描和双侧颈、椎动脉造影仍找不到原因的SAH占15-20%。本文评价44例不明原因的SAH患者的死亡率、再出血的危险性、有关神经症状和体征及日常生活能力。患者具有典型SAH临床表现,腰穿为血性或黄变脑脊液和/或CT扫描示蛛网膜下腔有血。不包括经双侧颈动脉和椎动脉造影证实为颅内动脉瘤、动
Subarachnoid hemorrhage (SAH) can be proven due to ruptured cystic aneurysm, intracranial and spinal arteriovenous malformation rupture, hypertensive bleeding, intracranial tumor hemorrhage, blood diseases and head trauma. With currently reliable neuroradiology techniques including CT scanning and bilateral neck, vertebral artery angiography still can not find the cause of SAH accounted for 15-20%. This article evaluates the mortality, re-bleeding risk, neurological symptoms and signs, and daily living ability in 44 patients with unexplained SAH. Patients have a typical clinical manifestation of SAH, lumbar puncture is bloody or yellowing cerebrospinal fluid, and / or CT scans show subarachnoid blood. Does not include bilateral carotid artery and vertebral artery angiography confirmed intracranial aneurysm, move