Hypersomnia due to injury of the lower ventral ascending reticular activating system in a patient with intraventricular hemorrhage

A 74-year-old female underwent extraventricular drainage for an intraventricular haemorrhage (IVH) at the neurosurgery department of a university hospital (Fig. 1-A). She exhibited severe hypersomnia following IVH onset. At four weeks after onset, she was transferred to the rehabilitation department of the same hospital to undergo rehabilitation. Except for approximately three hours during daytime, she remained asleep. Her sleep abnormality was indicated as severe hypersomnia on the Epworth Sleepiness Scale (score = 23; maximum score = 24; cut off for severe hypersomnia = 10) [1].
Source: Sleep Medicine - Category: Sleep Medicine Authors: Tags: Images in Sleep Medicine Source Type: research