Factors associated with blood transfusion during intracranial aneurysm surgery.

Study Objective: The purpose of this study was to identify risk factors associated with intraoperative blood transfusions in patients presenting for intracranial aneurysm surgery in the current era of more restrictive transfusion guidelines.

Design: Retrospective observational cohort study with stepwise, multivariate binary logistic regression analysis.

Setting: Tertiary care university teaching hospital.