The physiologic breathing mode in the human being is nasal, regardless of age.
Any factor leading to the upper airway UA obstruction causes nasal breathing to be replaced by mouth breathing, among which mechanical events, allergic and non allergic inflammatory diseases.
However, even after these mechanical factors are removed, MB continues in most cases due to patient’s mouth breathing habit.
Most children with OSA have difficulty breathing through the nose. Allergic rhinitis is the most commonly cited disease, followed by hypertrophy of the tonsils and adenoids.
Persistence of mouth breathing post T&A plays a role in progressive worsening of the AHI index.
May frequently occur within 3 year
Treatment of pediatric obstructive-sleep-apnea OSA and sleep-disordered-breathing SBD means restoration of continuous nasal breathing during wakefulness and sleep.
In fact restoration of nasal breathing during wake and sleep may be the only valid “complete” correction of pediatric sleep disordered breathing.
14 patients presented complaining of nasal congestion after previous nasal surgery and who appeared to have an adequate nasal airway with no evidence of nasal valve collapse, were evaluated for hyperventilation syndrome.
All patients had an elevated respiratory rate greater 18 breaths/minute with an upper thoracic breathing pattern.
An average number of 2.5 procedures had been performed on each patient.
Conclusion: Hyperventilation syndrome should be included in the differential diagnosis of patients presenting with nasal congestion, particularly after failed nasal surgery.
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