Efficacy of overnight pulse oximetry on evaluation after oral appliance treatment

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  • MIKAMI Toshihiko
    Divisions of Reconstructive Surgery for Oral and Maxillofacial Region, Department of Tissue Regeneration & Reconstruction, Niigata University Graduate School of Medical and Dental Sciences
  • HASEBE Daichi
    Divisions of Reconstructive Surgery for Oral and Maxillofacial Region, Department of Tissue Regeneration & Reconstruction, Niigata University Graduate School of Medical and Dental Sciences
  • SAITO Daisuke
    Divisions of Reconstructive Surgery for Oral and Maxillofacial Region, Department of Tissue Regeneration & Reconstruction, Niigata University Graduate School of Medical and Dental Sciences
  • ENDO Satoshi
    Divisions of Reconstructive Surgery for Oral and Maxillofacial Region, Department of Tissue Regeneration & Reconstruction, Niigata University Graduate School of Medical and Dental Sciences
  • KOBAYASHI Tadaharu
    Divisions of Reconstructive Surgery for Oral and Maxillofacial Region, Department of Tissue Regeneration & Reconstruction, Niigata University Graduate School of Medical and Dental Sciences

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  • OA治療の効果判定におけるパルスオキシメトリーの有用性
  • OA チリョウ ノ コウカ ハンテイ ニ オケル パルスオキシメトリー ノ ユウヨウセイ

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Abstract

Objectives : Polysomnography （PSG） is the standard method used to determine the efficacy of oral appliance （OA） treatment for obstructive sleep apnea （OSA） in our department. Pulse oximetry is also performed prior to PSG to evaluate OA efficacy, though the results can be inconsistent. Hence, a comparison study was conducted to determine the validity of pulse oximetry in evaluating OSA severity compared to PSG. <br>Methods : Among the 251 OSA cases who first visited the department between 2011 and 2015, 136 patients were evaluated using PSG and pulse oximetry after undergoing OA treatment. Since pulse oximetry is generally performed multiple times, the maximum, minimum, and average of 2％ oxygen desaturation index （ODI）, 3％ ODI, and 4％ ODI were compared to the apnea hypopnea index （AHI） scores from PSG data. <br>Results : The 3％ ODI_Max correlated most strongly with AHI （r＝0.500, p＜0.001, y＝0.602x＋6.783 （y：AHI, x：ODI））. In terms of severity, 2％ ODI_Max correlated most strongly with mild cases of OSA （r＝0.501, p＜0.001）, while 3％ ODI_Max correlated with moderate cases. In severe cases, no significant correlation was observed with any ODIs. In addition, when divided into two groups, BMI＜25 （non-obese group） and BMI＞25 （obese group）, the correlation was strongest with 3％ ODI_Max in the non-obese group, while the correlation coefficient was low at less than 0.4 in all ODIs. <br>Conclusions : The predictability of pulse oximetry prior to PSG was low for both severe OSA and obese cases. Hence, it is recommended to rely on PSG evaluation and disregard pulse oximetry results for severe OSA and obese cases.

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