ISSN 2149-3987 | E-ISSN 2149-553X
Original Article
The Ignored Parameter in the Diagnosis of Obstructive Sleep Apnea Syndrome The Oxygen Desaturation Index
1 Department of Otorhinolaryngology, Bakırköy Dr. Sadi Konuk Training and Research Hospital, İstanbul, Turkey  
Turk Arch Otorhinolaryngol 2018; 56: 1-6
DOI: 10.5152/tao.2018.3025
Key Words: Obstructive sleep apnea, apnea-hypopnea index, oxygen desaturation index, polysomnography, Epworth sleepiness scale


Objective: The apnea-hypopnea index (AHI) does not provide information about the apnea depth and length. We aimed to evaluate the correlation of the oxygen desaturation index (ODI) with AHI and the subjective symptoms because it is known that hypoxia plays an important role in morbidity and complications of obstructive sleep apnea syndrome (OSAS).


Methods: We reviewed the data of patients who applied to our clinic between 2010 and 2014 and underwent polysomnography (PSG) with a diagnosis of suspected sleep apnea. The demographic and anthropometric data of the patients were recorded. Epworth sleepiness scale (ESS) and values of AHI and ODI were analyzed in PSG.


Results: A total of 321 patients were divided into four groups, according to AHI as follows: 82 (25.5%) common snoring, 77 (24%)  mild obstructive sleep apnea (OSA) 71 (22.1%) moderate OSA, and 91 (28.3%) severe OSA. A strong correlation was detected between AHI and ODI (p<0.005 and r=0.904) in all patient groups. There was a positive correlation between AHI and ESS (p<0.05 and r=0.435), but the correlation of ESS with ODI was stronger than that with AHI (p<0.05 and r=0.504)


Conclusion: The subjective symptoms of sleep apnea syndrome seem to be closely related to oxygen desaturations. Hypoxia during apnea periods of OSA is important; therefore, we suggest that ODI is as valuable as AHI in diagnosing and grading the OSAS.


Cite this article as: Temirbekov D, Güneş S, Yazıcı ZM, Sayın i. The Ignored Parameter in the Diagnosis of Obstructive Sleep Apnea Syndrome: The Oxygen Desaturation Index. Turk Arch Otorhinolaryngol 2018; 56: 1-6

Key Words
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