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CC BY-NC-ND 4.0 · Sleep Sci 2022; 15(S 01): 224-228
DOI: 10.5935/1984-0063.20200119
SHORT COMMUNICATION

Oxygen desaturation index as alternative parameter in screening patients with severe obstructive sleep apnea

Lalee Varghese
1   Christian Medical College, Vellore, Department of Otorhinolaryngology - Vellore - Tamilnadu - India.
,
Grace Rebekah
2   Christian Medical College, Vellore, Department of Biostatistics - Vellore - Tamilnadu - India.
,
Priya Priya N
3   Christian Medical College, Vellore, Department of Pulmonary Medicine - Vellore - Tamilnadu - India.
,
Ashwin Oliver
4   Christian Medical College, Vellore, Department of Respiratory Medicine - Vellore - Tamilnadu - India.
,
Regi Kurien
1   Christian Medical College, Vellore, Department of Otorhinolaryngology - Vellore - Tamilnadu - India.
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Objectives Assess reliability of oxygen desaturation index (ODI) as an alternative parameter to apnea hypopnea index (AHI) in screening patients with severe obstructive sleep apnea (OSA).

Material and Methods Retrospectively two-year data on demography, anthropometric features, polysomnography (PSG) parameters [AHI, ODI, minimum oxygen saturation (SpO2), mean SpO2], and Epworth sleepiness score (ESS) were collected and analyzed.

Results Study showed significant correlation of ESS with AHI, ODI, apnea-hypopnea percentage of sleep period time (AH%SPT), mean SpO2 and minimum SpO2 with highest correlation being with AHI. A Cohen’s weighted Kappa analysis showed good concordance of 87.32% between AHI and ODI in classifying severity of OSA, with a significant R2 correlation of 0.84 on linear regression. An ODI>20 has a sensitivity of 96.6% and specificity of 69.6% in diagnosing severe OSA.

Conclusion Good concordance between AHI and ODI makes nocturnal oximetry a less expensive tool to confdently screen patients with severe OSA.

Apnea Hypopnea Index - Oxygen Desaturation Index - Obstructive Sleep Apnea - Sleepiness

FUNDING

This study received no funding.


COMPLIANCE WITH ETHICAL STANDARDS

ETHICAL APPROVAL

All procedures performed in this study were in accordance with the ethical standards of the institutional research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. Institutional review board approval was obtained prior to the commencement of the retrospective study.


INFORMED CONSENT

Since this is a retrospective study using existing data, informed consent was not required.




Publication History

Received: 27 October 2021

Accepted: 02 March 2021

Article published online:
01 December 2023

© 2023. Brazilian Sleep Association. This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/)

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