Chronic bronchitis is characterized by the production of which type of sputum?

Chronic bronchitis is a condition that involves long-term inflammation of the bronchial tubes, leading to a persistent cough and increased mucus production. The type of sputum produced in chronic bronchitis is typically purulent, meaning it often contains pus and is usually thick and discolored. This is a result of the body's response to inflammation and infection, as mucus production increases to help clear irritants and pathogens from the airways.

In contrast, clear mucus is more indicative of non-infectious conditions or early stages of bronchitis, while coughing and wheezing represent symptoms rather than the characteristics of sputum itself. Foamy sputum might be associated with other respiratory conditions but is not characteristic of chronic bronchitis. Hence, the production of purulent sputum is a notable feature of chronic bronchitis, reflecting the ongoing inflammatory process and potential infection within the airways.