Document Detail

Diagnostic accuracy of a questionnaire and simple home monitoring device in detecting obstructive sleep apnoea in a Chinese population at high cardiovascular risk.
MedLine Citation:
PMID:  20624255     Owner:  NLM     Status:  In-Process    
BACKGROUND AND OBJECTIVE: OSA is a common condition associated with cardiovascular (CV) morbidity. It remains underdiagnosed globally in part due to the limited availability and technical requirements of polysomnography (PSG). The aim of this study was to test the accuracy of two simple methods for diagnosing OSA. METHODS: Consecutive subjects identified from a community register with high CV risk were invited to complete the Berlin Sleep Questionnaire and undergo simultaneous, home, overnight PSG and ApneaLink device oximetry and nasal pressure recordings. The relative accuracies of the Berlin Questionnaire, oximetry and nasal pressure results in diagnosing PSG-defined moderate-severe OSA were assessed. RESULTS: Of 257 eligible high CV risk subjects enrolled, 190 completed sleep studies and 143 subjects' studies were of sufficient quality to include in final analyses. Moderate-severe OSA was confirmed in 43% of subjects. The Berlin Questionnaire had low overall diagnostic accuracy in this population. However, ApneaLink recordings of oximetry and nasal pressure areas had high diagnostic utility with areas under the receiver operating characteristic curves of 0.933 and 0.933, respectively. At optimal diagnostic thresholds, oximetry and nasal pressure measurements had similar sensitivity (84% vs 86%) and specificity (84% vs 85%). Technical failure was lower for oximetry than nasal pressure (5.8% vs 18.9% of tests). CONCLUSIONS: In patients with high CV risk overnight single-channel oximetry and nasal pressure measurements may provide high diagnostic accuracy and offer an accessible alternative to full PSG.
Dashiell Gantner; Ji-Yong Ge; Li-Hua Li; Nick Antic; Sam Windler; Keith Wong; Emma Heeley; Shao-Guang Huang; Ping Cui; Craig Anderson; Ji-Guang Wang; Doug McEvoy
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2010-07-06
Journal Detail:
Title:  Respirology (Carlton, Vic.)     Volume:  15     ISSN:  1440-1843     ISO Abbreviation:  Respirology     Publication Date:  2010 Aug 
Date Detail:
Created Date:  2010-07-28     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9616368     Medline TA:  Respirology     Country:  Australia    
Other Details:
Languages:  eng     Pagination:  952-60     Citation Subset:  IM    
The George Institute for International Health, Royal Prince Alfred Hospital and University of Sydney, Sydney, New South Wales, Australia.
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