1. Role and Impact of Chronic Cough in Individuals with Asthma From the General Population.
- Author
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Çolak Y, Afzal S, Lange P, Laursen LC, Nordestgaard BG, and Dahl M
- Subjects
- Aged, Asthma blood, Asthma physiopathology, Biomarkers blood, C-Reactive Protein analysis, Chronic Disease, Cough blood, Cough physiopathology, Denmark epidemiology, Female, Hospitalization statistics & numerical data, Humans, Leukocyte Count, Male, Middle Aged, Patient Acceptance of Health Care, Phenotype, Severity of Illness Index, Spirometry, Asthma epidemiology, Cough epidemiology
- Abstract
Background: Cough is a well-recognized symptom in asthma, but the role and impact of chronic cough in individuals with asthma has not been described in the general population., Objective: We hypothesized that among individuals with asthma, those with chronic cough versus those without have a more severe disease phenotype., Methods: We identified individuals with asthma and chronic cough among 14,740 adults from the Copenhagen General Population Study, and investigated respiratory symptoms, health care utilizations, lung function, and biomarkers in blood., Results: A total of 855 (6%) individuals suffered from asthma, and 70 (8%) had chronic cough. Individuals with asthma and chronic cough had a Leicester Cough Questionnaire median total score of 16.8 (25th and 75th percentiles, 14.8-18.9), corresponding to 5.4 (4.6-6.0) for the physical domain, 5.7 (4.6-6.4) for the psychological domain, and 6.0 (5.3-6.8) for the social domain. Among individuals with asthma, those with chronic cough versus those without reported more often wheezing (70% vs 54%), dyspnea (74% vs 49%), night-time dyspnea (27% vs 11%), sputum production (59% vs 14%), chest pain/tightness (14% vs 4%), acute bronchitis/pneumonia episodes, and general practitioner visits. Furthermore, these individuals had more often FEV
1 predicted value of less than 60% (14% vs 7%) and higher levels of neutrophils, leukocytes, and fibrinogen in blood, but there were no differences with regard to levels of high-sensitive C-reactive protein, eosinophils, and IgE in blood., Conclusions: Chronic cough in individuals with asthma is associated with a more severe disease phenotype in terms of worse respiratory symptoms, greater health care utilizations, lower lung function, and higher levels of systemic inflammatory biomarkers in blood., (Copyright © 2019 American Academy of Allergy, Asthma & Immunology. Published by Elsevier Inc. All rights reserved.)- Published
- 2019
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