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Related Experiment Videos

Do patients with obstructive sleep apnea have thick necks?

I Katz1, J Stradling, A S Slutsky

  • 1University of Toronto, Canada.

The American Review of Respiratory Disease
|May 1, 1990
PubMed
Summary

Patients with obstructive sleep apnea (OSA) often have short, fat necks. Neck circumference and obesity are key predictors of sleep apnea severity, potentially due to fat deposits impacting the airway.

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Area of Science:

  • Sleep Medicine
  • Respiratory Physiology
  • Medical Imaging

Background:

  • Obstructive sleep apnea (OSA) is frequently associated with a subjective impression of a short, fat neck in affected patients.
  • Objective measurements are needed to validate this clinical observation and understand its relationship with OSA severity.

Purpose of the Study:

  • To objectively measure external and internal neck circumferences in patients with suspected OSA.
  • To determine the correlation between neck dimensions, body mass index (BMI), and the apnea/hypopnea index (AHI).

Main Methods:

  • Studied 123 patients with suspected OSA undergoing nocturnal polysomnography.
  • Measured external neck circumference and used acoustic reflection to assess internal pharyngeal, glottic, and tracheal areas and upper airway length.

Related Experiment Videos

  • Applied stepwise multiple linear regression analysis to identify predictors of AHI.

    • Main Results:

    • External neck circumference, BMI, and distal pharyngeal circumference were significant predictors of AHI, accounting for 39% of its variability.
    • No significant correlation was found with other internal neck measurements or upper airway length.

    Conclusions:

    • External and internal neck circumferences, along with obesity, are important predictors of sleep apnea.
    • Neck fat accumulation may contribute to OSA pathogenesis by affecting pharyngeal size and airway dynamics.