Impaired behavioral and neurocognitive function in preschool children with obstructive sleep apnea.

Objective: We aimed to examine the hypothesis that behavioral and neurocognitive functions of preschool children with Obstructive Sleep Apnea Syndrome (OSAS) are impaired compared to healthy children, and improve after adenotonsillectomy (TA).

Methods: A comprehensive assessment battery was used to assess cognitive and behavioral functions, and quality of life in children with OSAS compared to matched controls.

Results: 45 children (mean age 45.