The effect of body position on airway patency in obstructive sleep apnea

CT imaging analysis

Woo Young Kim, Seung No Hong, Seung Koo Yang, Kuk Jin Nam, Kang Hyeon Lim, Sun Jin Hwang, Min Young Seo, Seung Hoon Lee

Research output: Contribution to journalArticleResearchpeer-review

Abstract

Purpose: Positional change during sleep influences upper airway patency. However, few studies have used imaging techniques to demonstrate the change. This study aims to determine the effect of positional change on the upper airway space. Methods: A total of 118 subjects with sleep breathing disorders were analyzed. Participants underwent upper airway CT scans in the supine and lateral decubitus positions (right and left). They were divided into non-obstructive sleep apnea (n = 28) and obstructive sleep apnea (n = 90) groups. We measured the minimal cross-sectional area of the retropalatal/retroglossal spaces and compared the differences of those two spaces in the supine and lateral positions. CT was performed while patients were awake. Results: The minimal cross-sectional area in the OSA group was significantly smaller than non-OSA group in both supine (median[interquartile range], 8.3[0.0–25.1] vs 22.2[1.0–39.6]; P = 0.018) and lateral decubitus positions (5.2[0.0–16.9] vs 21.3[6.1–38.4]; P = 0.002). As the body position of OSA patients shifted from supine to lateral, the retroglossal space increased significantly (67.3[25.1–116.3] vs 93.3[43.4–160.1]; P < 0.001). However, there was no significant difference in the retropalatal space between the supine and lateral decubitus positions. Conclusions: Positional change from the supine to lateral decubitus position expands the upper airway lumen, especially the retroglossal space. Positional OSA may be related to anatomical change of the upper airway lumen based on body position.

Original languageEnglish
Pages (from-to)911-916
Number of pages6
JournalSleep and Breathing
Volume23
Issue number3
DOIs
StatePublished - 1 Sep 2019

Fingerprint

Obstructive Sleep Apnea
Supine Position
Sleep Apnea Syndromes
Sleep
Respiration
Sleep Wake Disorders

Keywords

  • Airway
  • Body position
  • Computed tomography
  • Obstructive sleep apnea
  • Sleep

Cite this

Kim, Woo Young ; Hong, Seung No ; Yang, Seung Koo ; Nam, Kuk Jin ; Lim, Kang Hyeon ; Hwang, Sun Jin ; Seo, Min Young ; Lee, Seung Hoon. / The effect of body position on airway patency in obstructive sleep apnea : CT imaging analysis. In: Sleep and Breathing. 2019 ; Vol. 23, No. 3. pp. 911-916.
@article{17bd6756d3294623a5a822f5cc654f2d,
title = "The effect of body position on airway patency in obstructive sleep apnea: CT imaging analysis",
abstract = "Purpose: Positional change during sleep influences upper airway patency. However, few studies have used imaging techniques to demonstrate the change. This study aims to determine the effect of positional change on the upper airway space. Methods: A total of 118 subjects with sleep breathing disorders were analyzed. Participants underwent upper airway CT scans in the supine and lateral decubitus positions (right and left). They were divided into non-obstructive sleep apnea (n = 28) and obstructive sleep apnea (n = 90) groups. We measured the minimal cross-sectional area of the retropalatal/retroglossal spaces and compared the differences of those two spaces in the supine and lateral positions. CT was performed while patients were awake. Results: The minimal cross-sectional area in the OSA group was significantly smaller than non-OSA group in both supine (median[interquartile range], 8.3[0.0–25.1] vs 22.2[1.0–39.6]; P = 0.018) and lateral decubitus positions (5.2[0.0–16.9] vs 21.3[6.1–38.4]; P = 0.002). As the body position of OSA patients shifted from supine to lateral, the retroglossal space increased significantly (67.3[25.1–116.3] vs 93.3[43.4–160.1]; P < 0.001). However, there was no significant difference in the retropalatal space between the supine and lateral decubitus positions. Conclusions: Positional change from the supine to lateral decubitus position expands the upper airway lumen, especially the retroglossal space. Positional OSA may be related to anatomical change of the upper airway lumen based on body position.",
keywords = "Airway, Body position, Computed tomography, Obstructive sleep apnea, Sleep",
author = "Kim, {Woo Young} and Hong, {Seung No} and Yang, {Seung Koo} and Nam, {Kuk Jin} and Lim, {Kang Hyeon} and Hwang, {Sun Jin} and Seo, {Min Young} and Lee, {Seung Hoon}",
year = "2019",
month = "9",
day = "1",
doi = "10.1007/s11325-019-01863-x",
language = "English",
volume = "23",
pages = "911--916",
journal = "Sleep and Breathing",
issn = "1520-9512",
publisher = "Springer Verlag",
number = "3",

}

The effect of body position on airway patency in obstructive sleep apnea : CT imaging analysis. / Kim, Woo Young; Hong, Seung No; Yang, Seung Koo; Nam, Kuk Jin; Lim, Kang Hyeon; Hwang, Sun Jin; Seo, Min Young; Lee, Seung Hoon.

In: Sleep and Breathing, Vol. 23, No. 3, 01.09.2019, p. 911-916.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - The effect of body position on airway patency in obstructive sleep apnea

T2 - CT imaging analysis

AU - Kim, Woo Young

AU - Hong, Seung No

AU - Yang, Seung Koo

AU - Nam, Kuk Jin

AU - Lim, Kang Hyeon

AU - Hwang, Sun Jin

AU - Seo, Min Young

AU - Lee, Seung Hoon

PY - 2019/9/1

Y1 - 2019/9/1

N2 - Purpose: Positional change during sleep influences upper airway patency. However, few studies have used imaging techniques to demonstrate the change. This study aims to determine the effect of positional change on the upper airway space. Methods: A total of 118 subjects with sleep breathing disorders were analyzed. Participants underwent upper airway CT scans in the supine and lateral decubitus positions (right and left). They were divided into non-obstructive sleep apnea (n = 28) and obstructive sleep apnea (n = 90) groups. We measured the minimal cross-sectional area of the retropalatal/retroglossal spaces and compared the differences of those two spaces in the supine and lateral positions. CT was performed while patients were awake. Results: The minimal cross-sectional area in the OSA group was significantly smaller than non-OSA group in both supine (median[interquartile range], 8.3[0.0–25.1] vs 22.2[1.0–39.6]; P = 0.018) and lateral decubitus positions (5.2[0.0–16.9] vs 21.3[6.1–38.4]; P = 0.002). As the body position of OSA patients shifted from supine to lateral, the retroglossal space increased significantly (67.3[25.1–116.3] vs 93.3[43.4–160.1]; P < 0.001). However, there was no significant difference in the retropalatal space between the supine and lateral decubitus positions. Conclusions: Positional change from the supine to lateral decubitus position expands the upper airway lumen, especially the retroglossal space. Positional OSA may be related to anatomical change of the upper airway lumen based on body position.

AB - Purpose: Positional change during sleep influences upper airway patency. However, few studies have used imaging techniques to demonstrate the change. This study aims to determine the effect of positional change on the upper airway space. Methods: A total of 118 subjects with sleep breathing disorders were analyzed. Participants underwent upper airway CT scans in the supine and lateral decubitus positions (right and left). They were divided into non-obstructive sleep apnea (n = 28) and obstructive sleep apnea (n = 90) groups. We measured the minimal cross-sectional area of the retropalatal/retroglossal spaces and compared the differences of those two spaces in the supine and lateral positions. CT was performed while patients were awake. Results: The minimal cross-sectional area in the OSA group was significantly smaller than non-OSA group in both supine (median[interquartile range], 8.3[0.0–25.1] vs 22.2[1.0–39.6]; P = 0.018) and lateral decubitus positions (5.2[0.0–16.9] vs 21.3[6.1–38.4]; P = 0.002). As the body position of OSA patients shifted from supine to lateral, the retroglossal space increased significantly (67.3[25.1–116.3] vs 93.3[43.4–160.1]; P < 0.001). However, there was no significant difference in the retropalatal space between the supine and lateral decubitus positions. Conclusions: Positional change from the supine to lateral decubitus position expands the upper airway lumen, especially the retroglossal space. Positional OSA may be related to anatomical change of the upper airway lumen based on body position.

KW - Airway

KW - Body position

KW - Computed tomography

KW - Obstructive sleep apnea

KW - Sleep

UR - http://www.scopus.com/inward/record.url?scp=85066142498&partnerID=8YFLogxK

U2 - 10.1007/s11325-019-01863-x

DO - 10.1007/s11325-019-01863-x

M3 - Article

VL - 23

SP - 911

EP - 916

JO - Sleep and Breathing

JF - Sleep and Breathing

SN - 1520-9512

IS - 3

ER -