Objectives/hypothesis: To evaluate nasal resistance in obese children with and without obstructive sleep apnea syndrome (OSAS), study the correlation between nasal resistance and severity of OSAS using the apnea-hypopnea index (AHI), and examine the association of gender and body mass index (BMI) with this measurement.
Study Design: Retrospective analysis.
Methods: Active anterior rhinomanometry was used to determine anterior nasal resistance (aNR) during wakefulness in the supine position during tidal breathing. Thirty obese children with OSAS (aged 13.8 ± 2.6 years, BMI z score 2.6 ± 0.4) and 32 matched obese controls (aged 13.6 ± 2.3 years, BMI z score 2.4 ± 0.4), were studied. Unpaired t tests and Spearman correlation were performed.
Results: The OSAS group had significantly higher aNR than the non-OSAS group during inspiration (P = .012) and expiration (P = .003). A significant correlation between inspiratory aNR and AHI was found for the OSAS group (r = 0.39, P = .04). The aNR did not correlate with BMI z score or with either gender.
Conclusions: We noted a higher aNR in obese children with OSAS as compared to obese controls, and the aNR on inspiration correlated significantly with AHI. These findings suggest that a causal or augmentative effect of high inspiratory aNR may exist for obese children who exhibit OSAS.
Level Of Evidence: 3b.
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| http://dx.doi.org/10.1002/lary.24653 | DOI Listing |
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