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Objective:Through retrospective case analysis,this study investigate the risk factors relevant to SCVS in order to Provide Useful information for clinical work. Methods: Clinical data of 81 cases with aSAH was Reviewed in this study. Cases with worsened clinical symptoms Presented within 3 weeks Onset and could not be explained by other reasons were diagnosed as SCVS.7 risk factors Such as age,sex, smoking,the position of Aneurysm and so on were separately analyzed. Results:multifactor Logistic regression analysis suggesting Hunt-Hess grade, modified Fisher grade, rehaemorrhagia enter the equation, they Might be independent risk factors to SCVS, blood calculus enter the equation,it might be protection factor. Conclusion:SCVS is a common functionary result by multiple factors; modified Fisher grade, Hunt-Hess grade, rehaemorrhagia might be the independent risk factors and blood calculus might be protection factor.
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