Outcome of Fourth Ventricular Hemorrhage in Ruptured Brain Aneurysms: Impact of Active Blood Clearance and Delayed Cerebral Ischemia Prevention

Blood in the fourth ventricle is associated with poor outcomes in patients with aneurysmal subarachnoid hemorrhage (aSAH). We investigated (1) the prognostic significance of the amount of blood in the fourth ventricle and (2) the influence of active blood clearance and delayed cerebral ischemia prevention (ABCD).