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Title: | Detection of pneumonia associated pathogens using a prototype multiplexed pneumonia test in hospitalized patients with severe pneumonia |
Author: | Schulte, Berit Eickmeyer, Holm Heininger, Alexandra Juretzek, Stephanie Karrasch, Matthias Denis, Olivier Roisin, Sandrine Pletz, Mathias W. Klein, Matthias Barth, Sandra Lüdke, Gerd H. Thews, Anne Torres Martí, Antoni Cillóniz, Catia Straube, Eberhard Autenrieth, Ingo B. Keller, Peter M. |
Keywords: | Diagnòstic microbiològic Reacció en cadena de la polimerasa Pneumònia Pneumònia adquirida a la comunitat Epidemiologia Malalts hospitalitzats Diagnostic microbiology Polymerase chain reaction Pneumonia Community-acquired pneumonia Epidemiology Hospital patients |
Issue Date: | 14-Nov-2014 |
Publisher: | Public Library of Science (PLoS) |
Abstract: | Severe pneumonia remains an important cause of morbidity and mortality. Polymerase chain reaction (PCR) has been shown to be more sensitive than current standard microbiological methods--particularly in patients with prior antibiotic treatment--and therefore, may improve the accuracy of microbiological diagnosis for hospitalized patients with pneumonia. Conventional detection techniques and multiplex PCR for 14 typical bacterial pneumonia-associated pathogens were performed on respiratory samples collected from adult hospitalized patients enrolled in a prospective multi-center study. Patients were enrolled from March until September 2012. A total of 739 fresh, native samples were eligible for analysis, of which 75 were sputa, 421 aspirates, and 234 bronchial lavages. 276 pathogens were detected by microbiology for which a valid PCR result was generated (positive or negative detection result by Curetis prototype system). Among these, 120 were identified by the prototype assay, 50 pathogens were not detected. Overall performance of the prototype for pathogen identification was 70.6% sensitivity (95% confidence interval (CI) lower bound: 63.3%, upper bound: 76.9%) and 95.2% specificity (95% CI lower bound: 94.6%, upper bound: 95.7%). Based on the study results, device cut-off settings were adjusted for future series production. The overall performance with the settings of the CE series production devices was 78.7% sensitivity (95% CI lower bound: 72.1%) and 96.6% specificity (95% CI lower bound: 96.1%). Time to result was 5.2 hours (median) for the prototype test and 43.5 h for standard-of-care. The Pneumonia Application provides a rapid and moderately sensitive assay for the detection of pneumonia-causing pathogens with minimal hands-on time. |
Note: | Reproducció del document publicat a: https://doi.org/10.1371/journal.pone.0110566 |
It is part of: | PLoS One, 2014, vol. 9, num. 11, p. e110566 |
URI: | http://hdl.handle.net/2445/120729 |
Related resource: | https://doi.org/10.1371/journal.pone.0110566 |
ISSN: | 1932-6203 |
Appears in Collections: | Articles publicats en revistes (Medicina) Publicacions de projectes de recerca finançats per la UE |
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