Predictive value of kushida index and acoustic pharyngometry for the evaluation of upper airway in subjects with or without obstructive sleep apnea

Gun Jung Dae*, Young Cho Hae, Ronald R. Grunstein, Brendon Yee

*Corresponding author for this work

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

Acoustic pharyngometry is a relatively new noninvasive method that quantifies geometrically complexed pharyngeal dimensions. Our study aimed to investigate the predictability and usefulness of acoustic pharyngometry in diagnosis of obstructive sleep apnea (OSA), and we developed a prospective clinical trial in 16 subjects without apnea and 54 subjects with apnea. All seventy subjects received polysomnography (PSG) to assess the sleep architecture, including breathing and the degree of apnea hypopnea index. Acoustic pharyngometry was performed in four body positions (sitting, supine, right and left lateral) while awake with tidal breathing in addition to morphometric measurements (Kushida index) of oral cavity. This study shows that the cross-sectional area and volume of the upper airway is smaller in the supine position than any other positions. As well, the oropharyngeal junction area of the supine position is the most predictive parameter to discriminate between subjects with or without OSA. Acoustic pharyngometry can be a clinically useful tool for localizing the narrowed portion of the upper airway and predicting obstructive sleep apnea.

Original languageEnglish
Pages (from-to)662-667
Number of pages6
JournalJournal of Korean Medical Science
Volume19
Issue number5
Publication statusPublished - Oct 2004
Externally publishedYes

Keywords

  • Acoustic Pharyngometry
  • Kushida Index
  • Predictive Value of Tests
  • Sleep Apnea, Obstructive
  • Upper Airway

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