aSAH Treatment Based on Intraventricular ICP Monitoring: A Prospective, Multicenter, Randomized and Controlled Trial

This study is testing whether measuring pressure inside the brain's fluid spaces (using an intraventricular pressure monitor) and adjusting treatment accordingly improves outcomes after a brain bleed caused by a ruptured aneurysm (subarachnoid hemorrhage). **You may be eligible if...** - You have been diagnosed with a subarachnoid hemorrhage (bleeding in the space around the brain) caused by a ruptured aneurysm - You are 18 or older and symptoms began within the past 72 hours - Your level of consciousness is moderate (Hunt-Hess grade 2–4) - Surgery or a procedure to repair the aneurysm is planned within 72 hours **You may NOT be eligible if...** - You are pregnant or breastfeeding - Both pupils are fixed and dilated on arrival (sign of very severe brain injury) - You have an active tumor or other serious concurrent conditions Talk to your doctor to see if this trial is right for you.