Can J Neurol Sci
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Acute hydrocephalus is a potentially treatable cause of early neurological deterioration after aneurysmal subarachnoid hemorrhage (SAH). ⋯ Patients with acute hydrocephalus following SAH can be safely treated with external ventricular drainage. Multiple factors can be identified to predict those patients who will develop acute hydrocephalus post aneurysmal rupture. Approximately 30% of those patients with acute hydrocephalus will require definitive shunt placement. Acute hydrocephalus occurred in 31% of aneurysmal SAH patients in this series.