Neuropsychological functioning in children with shunted uncomplicated hydrocephalus.

A neuropsychological battery was given to a CT-defined group of children shunted for uncomplicated hydrocephalus with estimated normal range IQs. When no other brain anomalies were present, verbal IQ estimates were inferior to age and sex matched controls, but still in the normal range. In the presence of average academic performance and normal range IQ, impairment of neuropsychological functioning in verbal and nonverbal memory, fine motor speed, and visuospatial problem solving was observed. Successful neurosurgical management of hydrocephalus is not necessarily equated with achieving normal neuropsychological functioning.