08/08/2026
Great summary of sleep disordered breathing SDB and obstructive sleep apnoea OSA from David McIntosh ENT 👏🏻🙏🏻
What is the difference between sleep-disordered breathing and obstructive sleep apnoea in children?
This is one of the most important distinctions in paediatric airway medicine.
Obstructive sleep apnoea (OSA) is not synonymous with sleep-disordered breathing (SDB).
Paediatric sleep-disordered breathing exists on a spectrum.
A child may have significant upper-airway obstruction during sleep, increased respiratory effort, flow limitation, snoring, restless sleep, frequent arousals, mouth breathing or disrupted sleep architecture without necessarily meeting conventional diagnostic criteria for obstructive sleep apnoea.
This matters because the apnoea-hypopnoea index (AHI) measures only part of the problem.
A child can have a relatively low AHI and still have clinically important sleep disruption and upper-airway dysfunction.
So when assessing a child who snores, mouth breathes, sleeps restlessly, has behavioural difficulties, struggles at school or has unexplained daytime fatigue, I believe we need to ask a broader question:
Does this child have obstructive sleep apnoea?
But also:
Does this child have sleep-disordered breathing?
Those are not necessarily the same question.
The clinical assessment should integrate the child’s symptoms, sleep, airway anatomy, nasal obstruction, tonsils and adenoids, craniofacial development and, where appropriate, objective sleep testing.
A sleep study is an important tool—but it should not necessarily be regarded as the entire diagnosis.
This distinction is particularly important when we are trying to identify children earlier, before years of disrupted sleep and impaired daytime function become normalised.
I believe paediatric sleep-disordered breathing deserves to be recognised as a clinical condition in its own right, rather than simply as a synonym for OSA.
More information:
training.airwaybreathingacademy.com
Dr David McIntosh
ENT Surgeon
Paediatric ENT | Sleep-Disordered Breathing | Airway