| Title: | Detection of obstructive sleep apnoea by an electronic nose |
| Author(s): | Greulich T; Hattesohl A; Grabisch A; Koepke J; Schmid S; Noeske S; Nell C; Wencker M; Jorres RA; Vogelmeier CF; Kohler U; Koczulla AR; |
| Address: | "Respiratory Medicine, University of Marburg, University Hospital of Giessen and Marburg, Marburg, Germany. greulich@med.uni-marburg.de" |
| DOI: | 10.1183/09031936.00091712 |
| ISSN/ISBN: | 1399-3003 (Electronic) 0903-1936 (Linking) |
| Abstract: | "Diagnosis of obstructive sleep apnoea syndrome (OSAS) is technically demanding, cost-intensive and time-consuming. The measurement of volatile organic compounds by an electronic nose is an innovative method that determines distinct molecular patterns of exhaled breath in different patient groups. We addressed the following questions: What is the diagnostic accuracy of an electronic nose in the detection of OSAS and the ability to detect effects of standard therapy in patients with OSAS? Are these results related to changes in distinct markers of airway inflammation and extracellular remodelling? We included 40 OSAS patients and 20 healthy controls. Exhaled breath of all participants was analysed using the Cyranose 320 electronic nose. Pharyngeal washings were performed to sample the upper airway compartment. For statistical analysis linear discriminant analysis was employed. We identified a linear discriminant function separating OSAS from control (p<0.0001). The corresponding area under the receiver-operating curve was 0.85 (95% CI 0.75-0.96; sensitivity 0.93 and specificity 0.7). In pharyngeal washing fluids of OSAS patients, we observed higher levels of alpha1-antitrypsin and markers of extracellular remodelling compared to controls. The electronic nose can distinguish between OSAS patients and controls with high accuracy" |
| Keywords: | "Adult Aged Airway Remodeling Case-Control Studies Discriminant Analysis *Electronic Nose Exhalation Female Humans Hydrogen-Ion Concentration Inflammation Male Middle Aged Monitoring, Physiologic/*methods Polysomnography/methods ROC Curve Sensitivity and S;" |
| Notes: | "MedlineGreulich, Timm Hattesohl, Akira Grabisch, Antje Koepke, Janine Schmid, Severin Noeske, Sarah Nell, Christoph Wencker, Marion Jorres, Rudolf A Vogelmeier, Claus Franz Kohler, Ulrich Koczulla, Andreas Rembert eng Research Support, Non-U.S. Gov't England 2012/10/27 Eur Respir J. 2013 Jul; 42(1):145-55. doi: 10.1183/09031936.00091712. Epub 2012 Oct 25" |
