Predictors Of Shunt-dependent Hydrocephalus After Aneurysmal Subarachnoid Hemorrhage

Objective:The purpose of this study is to investigate risk factors that could predict the occurrence of shunt-dependent hydrocephalus among patients with aSAH.Methods:One hundred and thirty-six consecutive patients who were treated for ruptured aneurysms within72h after experiencing SAH from January2011to January2013were analyzed retrospectively to assess the risk factors predictive of shunt-dependent hydrocephalus. Lumbar drainage was performed during the surgery in all patients.Results:Of the136patients,23(16.91%) underwent shunt operation to treat shunt-dependent hydrocephalus. The univariate analysis showed that several variables were associated with shunt-dependent hydrocephalus:①Hunt-Hess grade at admission (P<0.01);②Fisher grade (P<0.01);③the presence of intraventricular hemorrhage (P<0.01);④location of ruptured aneurysm (P=0.001);⑤the average daily volume of cerebrospinal fluid drainage (CSF)(P=0.047).Conclusion:The aSAH patients with poor admission Hunt-Hess grade, high Fisher grade, the presence intraventricular hemorrhage, posterior circulation ruptured aneurysm, or too much or too little average daily volume of CSF, are more likely to develop shunt-depended hydrocephalus.