Which etiological structural factors are related to craniofacial bony anatomy in obstructive sleep apnea (OSA)?

Updated: Sep 15, 2020
  • Author: Himanshu Wickramasinghe, MD, MBBS; Chief Editor: Zab Mosenifar, MD, FACP, FCCP  more...
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Structural factors related to craniofacial bony anatomy that predispose patients with OSA to pharyngeal collapse during sleep include the following:

  • Innate anatomic variations (facial elongation, posterior facial compression)

  • Retrognathia and micrognathia

  • Mandibular hypoplasia

  • Brachycephalic head form - Associated with an increased AHI in whites but not in African Americans. [27]

  • Inferior displacement of the hyoid

  • Adenotonsillar hypertrophy, particularly in children and young adults

  • High, arched palate (particularly in women)

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