Hearing loss mediates executive function impairment in sleep-disordered breathing

Area of Science:

• Pediatric Otolaryngology
• Pediatric Sleep Medicine
• Developmental Psychology

Background:

• Sleep-disordered breathing (SDB) and conductive hearing loss frequently co-occur in early childhood, often due to adenotonsillar hypertrophy.
• Conductive hearing loss is independently linked to impaired executive function and behavioral issues in children.
• This study investigated if hearing loss mediates executive function and behavioral deficits in children with SDB.

Purpose of the Study:

• To examine the relationship between SDB and executive function/behavioral difficulties in preschool children.
• To determine if conductive hearing loss mediates these impairments in children with SDB.
• To explore potential therapeutic targets for improving outcomes in children with SDB.

Main Methods:

• Fifty-eight children (3-5 years) were assessed: 37 snorers awaiting adenotonsillectomy and 21 controls.
• Evaluations included audiometry, Strengths and Difficulties Questionnaire (SDQ), Behavior Rating of Executive Function (BRIEF-P), and hearing questionnaires.
• Polysomnography identified obstructive sleep apnea (OSA) in snorers; regression models analyzed SDB, hearing loss, and outcomes.

Main Results:

• Snorers exhibited poorer hearing, greater past hearing loss exposure, and higher SDQ/BRIEF-P scores than controls.
• Hearing loss history, not same-day audiometry, fully mediated snoring's impact on executive function (BRIEF-P), but not behavior (SDQ).
• In snorers, OSA directly affected behavior (SDQ) but was not mediated by hearing loss history.

Conclusions:

• Conductive hearing loss mediates the link between SDB and executive function deficits in early childhood, regardless of SDB severity.
• Hearing loss does not appear to mediate behavioral difficulties associated with SDB in this age group.
• Treating hearing loss in preschool children with SDB may offer a pathway to improving executive function.