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The independent contribution of Pseudomonas aeruginosa infection to long-term clinical outcomes in bronchiectasis

Lookup NU author(s): Professor Anthony De SoyzaORCiD



This is the authors' accepted manuscript of an article that has been published in its final definitive form by European Respiratory Society, 2018.

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Copyright © ERS 2018. Pseudomonas aeruginosa is responsible for chronic infection in many bronchiectasis patients but it is not known whether it is associated with worse clinical outcomes independent of the underlying severity of disease. This study analysed data from 2596 bronchiectasis patients included from 10 different bronchiectasis clinical centres across Europe and Israel, with a 5-year follow-up period. Prevalence of P. aeruginosa chronic infection and its independent impact on exacerbations, hospitalisations, quality of life and mortality was assessed. The prevalence of P. aeruginosa chronic infection was 15.0% (n=389). P. aeruginosa was associated with a higher mortality in a univariate analysis (hazard ratio (HR) 2.02; 95% (confidence interval) CI 1.53-2.66; p<0.0001) but an independent impact on mortality was not found in a multivariate analysis (HR 0.98; 95% CI 0.70-1.36; p=0.89). P. aeruginosa was independently associated with increased mortality only in patients with frequent exacerbations (two or more per year) (HR 2.03; 95% CI 1.36-3.03; p=0.001). An independent association with worse quality of life of 7.46 points (95% CI 2.93-12.00; p=0.001) was found in a multivariable linear regression. P. aeruginosa was therefore found to be independently associated with exacerbation frequency, hospital admissions and worse quality of life. Mortality was increased in patients with P. aeruginosa particularly in the presence of frequent exacerbations.

Publication metadata

Author(s): Araujo D, Shteinberg M, Aliberti S, Goeminne PC, Hill AT, Fardon TC, Obradovic D, Stone G, Trautmann M, Davis A, Dimakou K, Polverino E, De Soyza A, McDonnell MJ, Chalmers JD

Publication type: Article

Publication status: Published

Journal: European Respiratory Journal

Year: 2018

Volume: 51

Issue: 2

Print publication date: 01/02/2018

Online publication date: 31/01/2018

Acceptance date: 13/11/2017

Date deposited: 16/03/2018

ISSN (print): 0903-1936

ISSN (electronic): 1399-3003

Publisher: European Respiratory Society


DOI: 10.1183/13993003.01953-2017


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