ArticleTuberculosis and respiratory diseases2016
Implications of Emphysema and Lung Function for the Development of Pneumonia in Patients with Chronic Obstructive Pulmonary Disease.
Article in Tuberculosis and respiratory diseases, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
5 citing papers in PubMed, 5 citations in OpenAlex.
- Impact of emphysema on biomarkers in hospitalized COPD patients with community-acquired pneumonia: a retrospective study.BMC pulmonary medicine · 2026Article
- Associations among chronic obstructive pulmonary disease with asthma, pneumonia, and corticosteroid use in the general population.PloS one · 2020Observational
- Comparative study on medical utilization and costs of chronic obstructive pulmonary disease with good lung function.International journal of chronic obstructive pulmonary disease · 2017Article
- Blood eosinophil count as a prognostic biomarker in COPD.International journal of chronic obstructive pulmonary diseaseArticle
- Post-discharge extended care contributes to the disease control of patients with COPD: a Chinese study.International journal of chronic obstructive pulmonary diseaseObservational
Corrections and comments
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Authors and funding
9 authors at 7 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundChronic obstructive pulmonary disease (COPD) is sometimes complicated with pneumonia, but little is known about the risk factors that promote the development of pneumonia in COPD. These risk factors were evaluated in the present study.
methodsThe data of 324 patients with COPD from a prospective multi-center observational cohort with obstructive lung disease were evaluated retrospectively. To identify risk factors for the development of pneumonia in COPD, the clinical and radiological data at enrollment and the time to the first episode of pneumonia were analyzed by Cox proportional hazard analysis.
resultsThe median follow-up time was 1,099 days and 28 patients (8.6%) developed pneumonia. The Cox analysis showed that post-bronchodilator forced expiratory volume in one second (FEV1, % of predicted) and the computed tomography (CT) emphysema extent (inspiratory V950) were independent risk factors for the development of pneumonia (post-bronchodilator FEV1: hazard ratio [HR], 0.97; 95% confidence interval [CI], 0.94-1.00; p=0.048 and inspiratory V950: HR, 1.04; 95% CI, 1.01-1.07; p=0.01).
conclusionEmphysema severity measured by CT and post-bronchodilator FEV1 are important risk factors for the development of pneumonia in COPD.
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