Abstract: Objective：To investigate the clinical characteristics of aneurysmal subarachnoid hemorrhage(aSAH) in elderly patients under different treatments.Methods：A total of 48 cases of aged aSAH patients over 70 years old treated in Department III of Neurology,Renmin Hospital of Wuhan University from September 2018 to November 2020 were collected as the elderly group,and 288 cases of aSAH patients under 70 years old admitted during the same period were collected as the nonelderly group for retrospective analysis.The gender composition,admission condition,aneurysm characteristics,prognosis of the two groups were compared under different treatment options.Results：There were no significant differences in the aspect of gender composition,aneurysm neck widths,aspect ratios,aneurysm rupture and rebleeding between the two groups(P>0.05).There were statistically significant differences in the aspect of aneurysm locations(mainly internal carotid artery and posterior communicating aneurysms),histories of hypertension,HuntHess grades,Fisher grades,prognosis,cerebral infarctions and hydrocephalus(P<0.05).Conclusion：There are many prognostic factors affecting aSAH in elderly patients,and it is necessary to make a comprehensive analysis of the condition and the surgical plan for elderly patients.After evaluation,endovascular embolization is preferred.For patients with surgical clipping,hematoma should be removed as soon as possible to reduce the occurrence of infarction,which can improve the surgical treatment effect of elderly patients with aSAH.

Key words: aneurysm, subarachnoid hemorrhage, microsurgical, endovascular embolization