Nocturnal apnea in Chiari type I malformation

Area of Science:

• Pediatric Neurology
• Sleep Medicine
• Neurodevelopmental Disorders

Background:

• Sleep-disordered breathing (SDB) is a common concern in children, often attributed to upper airway obstruction.
• Enlarged adenoids are a frequent cause of obstructive sleep apnea (OSA) in pediatric patients.
• This case examines an unusual presentation of SDB initially suspected as OSA.

Observation:

• A 4-year-old girl presented with significant sleep-disordered breathing, characterized by prolonged pauses and daytime fatigue.
• Initial treatment targeting obstructive causes (adenotomy) failed to resolve the symptoms.
• Polysomnography revealed central apneas, prompting further investigation.

Findings:

• Central apneas were identified as the primary cause of SDB, despite initial suspicion of obstructive apnea.
• Cerebral magnetic resonance imaging (MRI) diagnosed a Chiari type I malformation.
• Polysomnography proved crucial in differentiating central from obstructive apneas.

Implications:

• This case underscores the necessity of considering central causes of apnea in children, even without overt neurological symptoms.
• It emphasizes the diagnostic value of polysomnography in distinguishing between central and obstructive sleep apnea.
• Early identification of underlying neurological conditions like Chiari malformation is vital for effective management of pediatric SDB.