We measured the critical nasal pressure (Pcrit), at which the upper airway collapses, in prepubertal children with obstructive sleep apnea syndrome (OSAS) compared to asymptomatic snoring. We found that Pcrit was higher in OSAS patients. Inspiratory airflow varied in proportion to upstream rather than downstream pressure changes. A reduction in Pcrit was associated with clinical improvement. We conclude that airway collapsibility is higher in children with OSAS than with snoring.

Project Start
Project End
Budget Start
Budget End
Support Year
32
Fiscal Year
1993
Total Cost
Indirect Cost
Name
Johns Hopkins University
Department
Type
DUNS #
045911138
City
Baltimore
State
MD
Country
United States
Zip Code
21218
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