Summary of: The Kushida Index as a screening tool for obstructive sleep apnoea-hypopnoea syndrome

RESEARCH SUMMARY

Summary of:

The Kushida Index as a screening tool for obstructive sleep apnoea-hypopnoea syndrome

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1*Consultant, Department of Restorative Dentistry, Glasgow Dental Hospital and School, 378 Sauchiehall Street, Glasgow G2 3JZ; 2Senior Lecturer Oral Biology, Glasgow Dental Hospital and School, 378 Sauchiehall Street, Glasgow G2 3JZ; 3Consultant, Department of Respiratory Medicine, Gartnavel General Hospital 1053 Great Western Road, Glasgow G12 0YN; 4Consultant, Department of Respiratory Medicine, Glasgow Royal Infirmary 84 Castle Street, Glasgow, Lanarkshire, G4 0SF; 5Senior Lecturer in Statistics, Glasgow Dental Hospital and School, 378 Sauchiehall Street, Glasgow G2 3JZ. Faculty of Medicine; 6Senior Lecturer, Section of Restorative Dentistry, Dundee Dental Hospital and School, Park Place, Dundee DD1 4HN. *Correspondence to: Mr Sachin Jauhar

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Online article number E2

Refereed Paper - accepted 28 October 2011 DOI: 10.1038/sj.bdj.2012.2

British Dental Journal 2012; 211: E2

S. Jauhar,1 R. Orchardson,2 S. W. Banham,3 E. Livingston,4 A. Sherriff5 and M. F. Lyons6

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Objectives To test the validity of the Kushida Index for screening for sleep apnoea in a West of Scotland adult population. Methods Specic intra-oral measurements and respiratory polysomnography were carried out on 71 patients in this prospective study. The intra-oral measurements were applied to the Kushida formula to obtain a value for the Kushida Index. This value was compared to the diagnosis obtained using polysomnography in the conventional manner. Results The sensitivity of the Kushida Index in this present study was 68% (95%CI 50-81) and the specicity was 71% (95%CI 52-84). The positive predictive value was 71% and the negative predictive value was 67%. The Mallampati score, Epworth sleepiness score and enlargement of the tongue, soft palate or tonsils were not statistically signicantly related to a diagnosis of sleep apnoea (p>0.05). Conclusion With the limited sensitivity and specicity of the Kushida Index demonstrated in this study, this test cannot be recommended as a screening tool for sleep apnoea in a West of Scotland population.

EDITOR'S SUMMARY

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