Cough is a common symptom of chronic obstructive pulmonary disease (COPD), and patients with COPD may produce sputum with coughing years before the development of airflow limitation. According to the Global Initiative for Chronic Obstructive Lung Disease’s 2020 report, up to what percentage of patients with COPD have cough with sputum production?
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“The presence of purulent sputum reflects an increase in inflammatory mediators, and its development may identify the onset of a bacterial exacerbation, though the association is relatively weak,” according to the report.
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