Improvement after treatment of hydrocephalus in aneurysmal subarachnoid haemorrhage: implications for grading and prognosis.

Two patients with aneurysmal subarachnoid haemorrhage and hydrocephalus are presented. On admission they scored E1M4V1 and E1M3Vtube on the Glasgow Coma Scale. The first patient recovered to E3M5Vtube after treatment of hydrocpehalus by extraventricular drainage. The second recovered to E2M5Vtube and later E4M6V4 after treatment of hydrocephalus with lumbar drainage. Based on the literature it is argued that these cases are no exception as to the improvement after treatment of hydrocephalus. The prognosis of patients with hydrocephalus after a subarachnoid haemorrhage, improves in parallel with the Glasgow Coma Scale after treatment of hydrocephalus. Therefore decision making on whether or not to treat a patient with a subarachnoid haemorrhage should be postponed until after treatment of hydrocephalus, if present.