Exhaled breath temperature increases at COPD exacerbation and correlates with sputum neutrophilia
Z. Lázár, A. Bikov, G. Gálffy, M. Orosz, G. Losonczy, I. Hováth (Budapest, Hungary)
Source: Annual Congress 2011 - Role of the biomarkers in airway diseases
Session: Role of the biomarkers in airway diseases
Session type: Poster Discussion
Number: 4784
Disease area: Airway diseases
Abstract Introduction: Assessment of exhaled breath temperature (EBT) has been suggested as a novel tool to detect airway inflammation. EBT and the rate of temperature increase are altered in stable states of asthma and COPD compared to healthy controls. In asthma EBT correlates with eosinophil percentage in sputum. However, it is not known if EBT changes at acute exacerbation of COPD and how it relates to airway inflammation, spirometric values and patient‘s health status.Methods: Ten patients with previously diagnosed COPD (age 63±11 years) were recruited 24 h within the onset of exacerbation (Anthonisen type I) and after systemic steroid and/or antibiotic treatment at recovery (7.6±1.4 days after). At visits EBT was recorded with a breath thermometer (X-Halo, Delmedica Investments Ltd, Singapore), spirometry was done, patients completed the COPD Assessment Test (CAT) and the first spontaneous sputum in the morning was collected and processed (Yamamoto C et al. Chest 1997). Paired t-test and Spearman correlation were used.Results: EBT at exacerbation was higher compared to that at recovery (34.42±0.73°C vs. 34.03±0.56°C, p=0.03). Sputum neutrophil percentage at exacerbation showed a positive correlation with EBT (r=0.78, p=0.02), and fell after treatment (57±12% vs. 39±18%, p=0.04). EBT at exacerbation was not related to spirometric variables or CAT score.Conclusion: EBT rises at acute exacerbation of COPD and it is associated with increased airway inflammation. Measuring exhaled breath temperature might be useful for monitoring airway inflammation in COPD. The study was supported by Hungarian Respiratory Society grant (to Zsófia Lázár) and OTKA 68808.
Rating:
You must login to grade this presentation.
Share or cite this content
Citations should be made in the following way:
Z. Lázár, A. Bikov, G. Gálffy, M. Orosz, G. Losonczy, I. Hováth (Budapest, Hungary). Exhaled breath temperature increases at COPD exacerbation and correlates with sputum neutrophilia. Eur Respir J 2011; 38: Suppl. 55, 4784
You must login to share this Presentation/Article on Twitter, Facebook, LinkedIn or by email.
Member's Comments
Related content which might interest you:
Related content which might interest you:
Exhaled breath CO and induced sputum in noninvasive assessment of COPD Source: Eur Respir J 2003; 22: Suppl. 45, 457s Year: 2003
Exhaled breath condensate for evaluation of inflammation in COPD patients Source: Eur Respir J 2006; 28: Suppl. 50, 35s Year: 2006
Content of nitric oxide in the exhaled breath condensate, induced sputum and BAL in asthma and COPD patients Source: Eur Respir J 2006; 28: Suppl. 50, 369s Year: 2006
Prediction of asthma exacerbations in children by FeNO and non-invasive inflammatory markers in exhaled breath condensate Source: Annual Congress 2008 - Assessment of inflammation, hyperresponsiveness and response to exercise in asthmatic children Year: 2008
Exhaled breath temperature in COPD patients Source: Annual Congress 2012 - Exhaled biomarkers in airway diseases Year: 2012
Exhaled breath temperature gradients are reduced in COPD patients Source: Eur Respir J 2002; 20: Suppl. 38, 301s Year: 2002
Prediction of CF exacerbations by FeNO and non-invasive inflammatory markers in exhaled breath condensate Source: Annual Congress 2008 - Cystic fibrosis: novel aspects of airway function and inflammation Year: 2008
Ozone-induced airway inflammation and its attenuation by corticosteroids are detectable in sputum samples but not in exhaled breath condensate Source: Eur Respir J 2004; 24: Suppl. 48, 577s Year: 2004
Exhaled breath temperature in children with chronic cough Source: International Congress 2019 – New insights into childhood infections: from viral bronchiolitis to bronchiolitis obliterans Year: 2019
Assessment of exhaled breath condensate pH in asthma and COPD patients with exacerbation Source: Annual Congress 2010 - COPD: treatment and monitoring Year: 2010
Nitrite concentration in exhaled breath condensate correlates with markers of lung overdistension in COPD Source: Eur Respir J 2004; 24: Suppl. 48, 317s Year: 2004
Exhaled bimarkers in exacerbation of COPD Source: Annual Congress 2007 - Molecular pathogenesis: focus on COPD and asthma Year: 2007
Exhaled NO (FeNO) levels in patients with exacerbation of COPD and/or bronchiectasis Source: International Congress 2018 – Biomarkers for evaluating COPD Year: 2018
Respiratory heat and moisture loss is associated with eosinophilic inflammation in asthma Source: Eur Respir J 2007; 29: 676-681 Year: 2007
Exhaled breath temperature in asthma Source: Eur Respir J 2003; 21: 195 Year: 2003
Eosinophil and neutrophilic chemotactic activity in the exhaled breath condensate of stable patients with asthma and COPD Source: Eur Respir J 2005; 26: Suppl. 49, 734s Year: 2005
Cystenil-leukotrienes as markers of airway inflammation in exhaled breath condensate of asthmatic children Source: Eur Respir J 2002; 20: Suppl. 38, 412s Year: 2002
Exhaled NO and exhaled breath condensate pH as predictors of sputum cell counts in optimally treated smoking asthmatics Source: Annual Congress 2010 - Induced sputum in relation: a fresh look on phenotyping and monitoring Year: 2010
Exhaled breath temperature in airways disease Source: Eur Respir J 2003; 22: 393-394 Year: 2003
Comparison between exhaled and sputum oxidative stress biomarkers in chronic airway inflammation Source: Eur Respir J 2004; 24: 1011-1017 Year: 2004