Chronic bronchitis is a form of chronic obstructive pulmonary disease (COPD) that affects the airways leading into the lungs. The airways or bronchi become inflamed, leading to an increase in mucus production. This condition usually affects smokers, causing a chronic, productive cough, wheezing, shortness of breath, and chest discomfort.
Chronic bronchitis has no cure and can lead to heart failure. More studies are needed, but recent research has examined the possibility of bronchoscopic treatment options for COPD.

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