Cognitive Impairment After Aneurysmal Subarachnoid Hemorrhage: Risk Factors, Efficacy of Lumbar Drainage and Prognostic Utility of the Montreal Cognitive Assessment

OBJECTIVE: This study aimed to identify risk factors for cognitive impairment after aneurysmal subarachnoid hemorrhage (aSAH), evaluate the efficacy of lumbar drainage (LD), and assess the prognostic utility of the Montreal Cognitive Assessment (MoCA). METHODS: In this retrospective cohort study, 75 aSAH patients aged 18 to 75 years underwent cognitive (MoCA), neurological (modified Rankin Scale, mRS), and functional (functional activities questionnaire, FAQ) assessments at 3 months postoperatively. Multivariate regression and receiver operating characteristic analyses were used to identify predictors. RESULTS: The incidence of cognitive impairment (MoCA