A Randomised Controlled Trial of Lumbar Drainage to Treat Communicating Hydrocephalus After Severe Intraventricular Hemorrhage

Inclusion Criteria: * supratentorial intracerebral hemorrhage \<60ml * intraventricular hemorrhage with casting of the third and fourth ventricles * obstructive hydrocephalus with need of external ventricular drainage * GCS \<9 on admission or within 48h of symptom onset * admission within 48h of symptom onset * preceding modified Rankin scale ≤3 * age 18-85 years Exclusion Criteria: * ICH related to oral anticoagulation, trauma, tumor, arteriovenous malformation, aneurysm, systemic thrombolysis or sinus thrombosis * infratentorial hemorrhage * pregnancy * admission 48h after symptom onset * preceding modified Rankin scale \>3