Abstract:
Aim:Six-minute walking test distance (6MWD) and body mass index, obstruction, dyspnea and exercise (BODE) index are measures of functional status in COPD patients, but require space, time and patient's compliance. Exhaled volatile organic compounds (VOCs) analysis via electronic nose is a quick and easy method that has already been used to discriminate COPD phenotypes. The aim of this study is to evaluate whether VOCs analysis can predict functional status and its variation over time in COPD patients. Methods:A monocentric prospective study with 1 year of follow-up was carried out. All patients underwent pulmonary function tests, arterial gas analysis, bioimpedance analysis, 6-minute walking test, and VOCs collection. Exhaled breath was collected with Pneumopipe® and analyzed using BIONOTE electronic nose. Outcomes prediction was performed by k-fold cross-validated partial least square discriminant analysis: accuracy, sensitivity and specificity as well as Cohen's kappa for agreement were calculated. Results:We enrolled 63 patients, 60.3% men, with a mean age of 71 (SD: 8) years, median BODE index of 1 (interquartile range: 0-3) and mean 6MWD normalized by squared height (n6MWD) of 133.5 (SD: 42) m/m2. The BIONOTE predicted baseline BODE score (dichotomized as BODE score <3 or ≥3) with an accuracy of 86% and quartiles of n6MWD with an accuracy of 79%. n6MWD decline more than the median value after 1 year was predicted with an accuracy of 86% by BIONOTE, 52% by Global Initiative for Chronic Obstructive Lung Disease (GOLD) class and 78% by combined BIONOTE and GOLD class. Conclusion:Exhaled VOCs analysis identifies classes of BODE and n6MWD quartiles, and outperforms GOLD classification in predicting n6MWD variation.
journal_name
Int J Chron Obstruct Pulmon Disauthors
Finamore P,Pedone C,Scarlata S,Di Paolo A,Grasso S,Santonico M,Pennazza G,Antonelli Incalzi Rdoi
10.2147/COPD.S159684subject
Has Abstractpub_date
2018-05-01 00:00:00pages
1441-1448eissn
1176-9106issn
1178-2005pii
copd-13-1441journal_volume
13pub_type
杂志文章abstract:BACKGROUND:Patients with chronic obstructive pulmonary disease (COPD) and chronic heart failure (CHF) seem to have several symptoms in common that impact health. However, methodological differences make this difficult to compare. AIM:Comparisons of symptoms, impact of symptoms on function and health between patients w...
journal_title:International journal of chronic obstructive pulmonary disease
pub_type: 杂志文章
doi:10.2147/COPD.S62563
更新日期:2014-07-18 00:00:00
abstract:BACKGROUND:Concerns have been raised that treatment of COPD with inhaled corticosteroids may increase pneumonia risk. Responding to a request from the European Medicines Agency Pharmacovigilance Risk Assessment Committee, a pooled analysis of interventional studies compared pneumonia risk with inhaled budesonide-contai...
journal_title:International journal of chronic obstructive pulmonary disease
pub_type: 杂志文章
doi:10.2147/COPD.S128358
更新日期:2017-04-05 00:00:00
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journal_title:International journal of chronic obstructive pulmonary disease
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doi:10.2147/COPD.S127923
更新日期:2017-04-24 00:00:00
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journal_title:International journal of chronic obstructive pulmonary disease
pub_type: 杂志文章
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更新日期:2015-08-31 00:00:00
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journal_title:International journal of chronic obstructive pulmonary disease
pub_type: 杂志文章,多中心研究,随机对照试验
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更新日期:2014-05-07 00:00:00
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pub_type: 杂志文章
doi:10.2147/COPD.S167523
更新日期:2018-08-28 00:00:00
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journal_title:International journal of chronic obstructive pulmonary disease
pub_type: 杂志文章,多中心研究
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pub_type: 杂志文章
doi:10.2147/COPD.S214737
更新日期:2019-09-05 00:00:00
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journal_title:International journal of chronic obstructive pulmonary disease
pub_type: 杂志文章,meta分析,评审
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更新日期:2016-09-16 00:00:00
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更新日期:2013-01-01 00:00:00
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pub_type: 杂志文章,随机对照试验
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更新日期:2017-11-20 00:00:00
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pub_type: 杂志文章,评审
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更新日期:2016-03-11 00:00:00
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journal_title:International journal of chronic obstructive pulmonary disease
pub_type: 杂志文章,多中心研究,随机对照试验
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pub_type: 杂志文章,已发布勘误
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pub_type: 杂志文章
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journal_title:International journal of chronic obstructive pulmonary disease
pub_type: 杂志文章
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