Upper airway changes in severe obstructive sleep apnea: Upper airway length and volumetric analyses using 3D MDCT

Seung Hoon Lee, Eun Joong Kim, Ji Ho Choi, Yeon Soo Kim, Tae Hoon Kim, Sang Hag Lee, Heung Man Lee, Chol Shin

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

Conclusion: Three-dimensional multi-detector computed tomography (3D MDCT) analysis of the upper airway suggested that the lengthening of the upper airway in the absence of volumetric change may independently contribute to the severity of obstructive sleep apnea syndrome (OSAS) in adults. Objectives: We sought to investigate the relationships among the length and volume of the upper airway to the severity of OSAS. Methods: A total of 73 subjects underwent 3D MDCT scanning and standard polysomnography. We measured the upper airway length (UAL), which was defined as the vertical distance from the hard palate to the hyoid in the mid-sagittal plane. We also used the height-adjusted UAL for analyses. Upper airway volume was measured using a 3D reconstruction of the cross-sectional area from the hard palate to the hyoid. Results: The adjusted UAL showed a significant positive correlation with the apnea hypopnea index (AHI, r = 0.523, p < 0.000) and was a significant variable for predicting the AHI of OSAS patients in multiple stepwise regression analysis. Although the severe OSAS group had a greater adjusted UAL compared with that of other groups (p = 0.001), the volume of the upper airway did not show differences among groups.

Original languageEnglish
Pages (from-to)527-532
Number of pages6
JournalActa Oto-Laryngologica
Volume131
Issue number5
DOIs
Publication statusPublished - 2011 May

Keywords

  • Three-dimensional image
  • apnea hypopnea index
  • polysomnography

ASJC Scopus subject areas

  • Otorhinolaryngology

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