Year : 2020 | Volume
: 15 | Issue : 2 | Page : 70--75
The correlation between oxygen saturation indices and the standard obstructive sleep apnea severity
Siraj Omar Wali1, Bahaa Abaalkhail2, Ibrahim AlQassas3, Faris Alhejaili1, David W Spence4, Seithikurippu R Pandi-Perumal5
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
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.
Prof. Siraj Omar Wali
Sleep Medicine and Research Center, King Abdulaziz University Hospital, Jeddah
|How to cite this article:|
Wali SO, Abaalkhail B, AlQassas I, Alhejaili F, Spence DW, Pandi-Perumal SR. The correlation between oxygen saturation indices and the standard obstructive sleep apnea severity.Ann Thorac Med 2020;15:70-75
|How to cite this URL:|
Wali SO, Abaalkhail B, AlQassas I, Alhejaili F, Spence DW, Pandi-Perumal SR. The correlation between oxygen saturation indices and the standard obstructive sleep apnea severity. Ann Thorac Med [serial online] 2020 [cited 2020 Jul 6 ];15:70-75
Available from: http://www.thoracicmedicine.org/article.asp?issn=1817-1737;year=2020;volume=15;issue=2;spage=70;epage=75;aulast=Wali;type=0