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Original Paper

Predictive Diagnostic Value of Clinical Assessment and Nonlaboratory Monitoring System Recordings in Patients with Symptoms Suggestive of Obstructive Sleep Apnea Syndrome

Schäfer H. · Ewig S. · Hasper E. · Lüderitz B.

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Department of Internal Medicine, University of Bonn, Germany

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Respiration 1997;64:194–199

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Article / Publication Details

First-Page Preview
Abstract of Original Paper

Received: June 10, 1996
Accepted: October 24, 1996
Published online: January 21, 2009
Issue release date: 1997

Number of Print Pages: 6
Number of Figures: 0
Number of Tables: 0

ISSN: 0025-7931 (Print)
eISSN: 1423-0356 (Online)

For additional information: https://www.karger.com/RES

Abstract

Obstructive sleep apnea syndrome (OSA) is of increasing importance because of its high prevalence and danger of morbidity to untreated patients. Diagnostic procedures need simplification. We evaluated the qualitative value of a stepwise diagnostic approach using clinical assessment and a home-based screening device according to current recommendations. Methods: We investigated 114 patients with symptoms suggestive of obstructive sleep apnea syndrome by means of their clinical features, questionnaire responses, four-channel nonlaboratory monitoring (NLM) and full polysomnography. Operative indices in the diagnosis of OSA were calculated. Results: A significant correlation (r = 0.7; p < 0.0001) was found between the oxygen desaturation index (ODI) and the respiratory disturbance index (RDI). The calculation of the difference between ODI by NLM and RDI by polysomnography showed a lack of agreement. Home-based monitoring revealed a high sensitivity (94%) but a low specificity (41 %) in diagnosing OSA. However, a combination of clinical features, questionnaires and pulse oximetry achieved a specificity of 92%. Conclusion: Home-based monitoring provides reasonable negative predictive values in the diagnosis of OSA syndrome in symptomatic patients. It therefore qualifies as a screening method. Combined with clinical features and questionnaires it provides high positive predictive values and may therefore prove useful in simplifying diagnostic procedures.

© 1997 S. Karger AG, Basel


Article / Publication Details

First-Page Preview
Abstract of Original Paper

Received: June 10, 1996
Accepted: October 24, 1996
Published online: January 21, 2009
Issue release date: 1997

Number of Print Pages: 6
Number of Figures: 0
Number of Tables: 0

ISSN: 0025-7931 (Print)
eISSN: 1423-0356 (Online)

For additional information: https://www.karger.com/RES


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