Annals of Thoracic Medicine Official publication of the Saudi Thoracic Society, affiliated to King Saud University
 
Search Ahead of print Current Issue Archives Instructions Subscribe e-Alerts Login 
Home Email this article link Print this article Bookmark this page Decrease font size Default font size Increase font size
ORIGINAL ARTICLE
Year : 2020  |  Volume : 15  |  Issue : 2  |  Page : 70-75

The correlation between oxygen saturation indices and the standard obstructive sleep apnea severity


1 Sleep Medicine Research Group, Sleep Medicine and Research Center, King Abdulaziz University Hospital, Jeddah, Saudi Arabia
2 Department of Family and Community Medicine, King Abdulaziz University, Jeddah, Saudi Arabia
3 International Medical Center, Jeddah, Saudi Arabia
4 Independent Researcher, Toronto, ON, Canada
5 Somnogen Canada Inc., Toronto, ON, Canada

Correspondence Address:
Prof. Siraj Omar Wali
Sleep Medicine and Research Center, King Abdulaziz University Hospital, Jeddah
Saudi Arabia
Login to access the Email id


DOI: 10.4103/atm.ATM_215_19

Rights and Permissions

OBJECTIVE: Currently accepted guidelines categorize obstructive sleep apnea (OSA) severity according to the Apnea–Hypopnea Index (AHI). However, it is unclear how to best define OSA severity. The present study sought to evaluate the concurrent validity of the widely accepted AHI by correlating it with various oxygen saturation (SpO2) and polysomnographic parameters. METHODS: The study utilized the data of a previous survey concerning the prevalence of OSA among a middle-aged Saudi population (n = 2682). Among the 346 individuals who underwent polysomnography, 178 had total sleep times of at least 240 min with rapid eye movement (REM) sleep and were included in the study. The standard classification of OSA severity was compared with different SpO2and polysomnographic parameters. RESULTS: The study found that there were correlations between the standard OSA severity based on AHI severity classification and different SpO2and polysomnographic parameters, including the desaturation index (DI), the sum of all desaturations, desaturation below 90%, the average duration of respiratory events, and indices of total arousals and respiratory arousals. All of these parameters correlated directly with OSA severity classification (P < 0.001 for each). However, REM sleep duration and SpO2nadir were inversely correlated with OSA severity (P < 0.003 and < 0.001, respectively). In addition, only the DI, SpO2nadir, and respiratory arousal index were predictors of OSA severity, as determined through a multiple logistic regression analysis. CONCLUSION: Our findings support the clinical reliability of the currently used standard classification of OSA severity based on the AHI.


[FULL TEXT] [PDF]*
Print this article     Email this article
 Next article
 Previous article
 Table of Contents

 Similar in PUBMED
   Search Pubmed for
   Search in Google Scholar for
 Related articles
 Citation Manager
 Access Statistics
 Reader Comments
 Email Alert *
 Add to My List *
 * Requires registration (Free)
 

 Article Access Statistics
    Viewed232    
    Printed8    
    Emailed0    
    PDF Downloaded88    
    Comments [Add]    

Recommend this journal