alexa The relationship between obesity and craniofacial structure in obstructive sleep apnea.


Journal of Sleep Disorders & Therapy

Author(s): Ferguson KA, Ono T, Lowe AA, Ryan CF, Fleetham JA

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Abstract STUDY OBJECTIVE: To evaluate the interaction between craniofacial structure and obesity in male patients with obstructive sleep apnea (OSA). DESIGN: Retrospective analysis of a cohort of OSA patients. The relationships between neck circumference (NC), body mass index, apnea severity, and craniofacial and upper airway soft-tissue measurements from upright lateral cephalometry were examined. Patients were divided into groups; small to normal NC (group A), intermediate NC (group B), or large NC (group C). SETTING: A university teaching hospital and tertiary sleep referral center. PATIENTS: A consecutive series of patients with OSA who underwent polysomnography and lateral cephalometry. MEASUREMENTS AND RESULTS: Group A patients were less obese and had more craniofacial abnormalities such as a smaller mandible and maxilla and a more retrognathic mandible. Group B patients had both upper airway soft-tissue and craniofacial abnormalities. Group C patients were more obese with larger tongues and soft palates, and an inferiorly placed hyoid. Group C patients also had fewer craniofacial abnormalities than group A or B patients. There was no difference in airway size among the three groups. CONCLUSIONS: We conclude that there is a spectrum of upper airway soft-tissue and craniofacial abnormalities among OSA patients: obese patients with increased upper airway soft-tissue structures, nonobese patients with abnormal craniofacial structure, and an intermediate group of patients with abnormalities in both craniofacial structure and upper airway soft-tissue structures.
This article was published in Chest and referenced in Journal of Sleep Disorders & Therapy

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