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ORIGINAL ARTICLE
Year : 2019  |  Volume : 3  |  Issue : 2  |  Page : 36-39

McGill oximetry score to predict risk of obstructive sleep apnea in pediatric patients


Department of Paediatrics, Kwong Wah Hospital, Hong Kong SAR

Correspondence Address:
Wing-Shan Chan
Department of Paediatrics, Kwong Wah Hospital, 25 Waterloo Road
Hong Kong SAR
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/prcm.prcm_7_19

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Objective: The aim of this study is to investigate the use of overnight oximetry to predict high Apnea–Hypopnea Index (AHI) in Hong Kong children with habitual snoring. Methodology: We have retrospectively analyzed the polysomnography (PSG) of 573 patients with habitual snoring with age ranged from 6 months to 18 years old. Patients with syndromal diagnosis or neuromuscular disorders were excluded from the study. The sensitivity, specificity, positive predictive value , and negative predictive value (NPV) of oximetry to predict AHI were calculated. Results: McGill score >1 had high specificity 99.07% and low sensitivity 16.81% to detect AHI >1. SpO2 nadir <95% has high sensitivity 98.56% and NPV 97.56% to predict AHI >5. Conclusion: The use of the McGill score together with nadir SpO2 in overnight oximetry can help in stratifying the severity of obstructive sleep Apnea and thus prioritizing PSG testing.


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