Clinical Characteristics and Cerebral Angiography Analysis in Spontaneous Subarachnoid Hemorrhage

Objective To analyze the clinical characteristics and etiology of spontaneous subarachnoid hemorrhage(SAH).Methods Digital subtraction angiography(DSA)was performed in 120 cases diagnosed as SAH by CT,lumbar puncture and clinic symptoms.The DSA was reexamined 2 weeks later in the cases that the first DSA showed negative results.The clinic symptoms and the DSA results were analyzed.Results Headache,vomiting and positive meningeal irritation signs were the main symptoms of SAH,and 95 cases (79.2%)showed positive DSA including 72 cases(75.8%)of cerebral aneurysm,75 cerebral aneurysms detected by routine antero-posterior projection,lateral projection and oblique projection,and 7 cases were detected by rotary DSA,19 cases(20.0%) of cerebral vascu-lar malformations,3 cases(3.2%) of moyamoya disease,and 1 case(0.1%) of superior sagittal sinus thrombosis,and 25 cases(20.8%)were normal.Conclusion Cerebral aneurysm is the most common cause for SAH,and the effective diagnostic method for SAH is DSA.