Increased Upper Airway Collapsibility in Children with Obstructive Sleep Apnea during Wakefulness

American Journal of Respiratory and Critical care Medicine, 2004

Authors: D. Gozal and M. M. Burnside

Conclusion: “This study shows that acoustic pharyngometric measurements of the upper airway before and after topical anesthesia provide a reproducible measure of Upper Airway Collapsibility in awake children. Furthermore, a cutoff value derived from the differences in cross-section area before and after topical anesthesia predicts, with high sensitivity and specificity, the number of children who have sleep disordered breathing. Furthermore, measurements of UAC after surgical removal of tonsils and adenoids in children with SDB show normalization of upper airway dynamics in
approximately two-thirds of the children, whereas in the remaining one-third increased UAC remains despite marked improvements and/or normalization of their respiratory patterns during sleep.”

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