RESUMO
Objective To explore clinical characteristics of spontaneous subarachnoid hemorrhage(SAM)pa- tients.Methods Etiopathogenisis and clinical manifestations of 167 SAIl patients of different ages and cause of 24 SAH patients' exacerbation and death were retrospectively analyzed.Results The aneurysm was the main etiologies of SAH.The youth and middle-ages SAH patients were caused by aneurysm.Hypertensive arteriosclerosis was the second etiologies of SAH which was mainly in middle-ages and old ages.SAH caused by Vascular malformation main- ly appeared in youth group.Headache and vomitus and meningeal irritation sign which mainly appeared in youth and middle-ages groups.Occiput pain and conscious disturbance was mainly the first symptoms of aggravation and death of SAH which happened in 14 days after hemorrhage and under 45 year ages.Conclusion Aneurysm and vascular malformations are the main causes of SAH of young patients.And hypertensive arteriosclerosis is the main cause of the old.The clinical manifestations of the old are not as typical as the young.Posterior cranial fossa hemorrhage is the main cause of SAH patients which are mostly under 45 year ages and mostly happen in 14 days after bleeding.