The Impact of Tobacco Smoking on Adult Asthma Outcomes

Angelica Tiotiu, Iulia Ioan, Nathalie Wirth, Rodrigo Romero-Fernandez and Francisco-Javier González-Barcala
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Angelica Tiotiu: Department of Pulmonology, University Hospital of Nancy, 54511 Nancy, France
Iulia Ioan: Development, Adaptation and Disadvantage, Cardiorespiratory Regulations and Motor Control (EA 3450 DevAH), University of Lorraine, 54505 Nancy, France
Nathalie Wirth: Department of Pulmonology, University Hospital of Nancy, 54511 Nancy, France
Rodrigo Romero-Fernandez: Department of Medicine, Clinic University Hospital, Santiago de Compostela, 15706 Santiago de Compostela, Spain
Francisco-Javier González-Barcala: Department of Medicine, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain

IJERPH, 2021, vol. 18, issue 3, 1-12

Abstract: Background : Tobacco smoking is associated with more severe asthma symptoms, an accelerated decline in lung function, and reduced responses to corticosteroids. Our objective was to compare asthma outcomes in terms of disease control, exacerbation rates, and lung function in a population of asthmatic patients according to their smoking status. Methods : We compared patients’ demographics, disease characteristics, and lung-function parameters in current-smokers (CS, n = 48), former-smokers (FS, n = 38), and never-smokers (NS, n = 90), and identified predictive factors for asthma control. Results : CS had a higher prevalence of family asthma/atopy, a lower rate of controlled asthma, impaired perception of dyspnea, an increased number of exacerbations, and poorer lung function compared to NS. The mean asthma control questionnaire’s (ACQ) score was higher in CS vs. NS and FS (1.9 vs. 1.2, p = 0.02). Compared to CS, FS had a lower rate of exacerbations, a better ACQ score (similar to NS), a higher prevalence of dyspnea, and greater lung-diffusion capacity. Non-smoking status, the absence of dyspnea and exacerbations, and a forced expiratory volume in one second ≥80% of predicted were associated with controlled asthma. Conclusions : CS with asthma exhibit worse clinical and functional respiratory outcomes compared to NS and FS, supporting the importance of smoking cessation in this population.

Keywords: tobacco smoking; asthma control; exacerbations; lung function; smoking cessation (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2021
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