Lecturer
Chronic bronchitis is defined as a chronic productive cough lasting at least three months in two consecutive years. At the same time, other possible causes of cough - pulmonary (bronchiectasis) and non-pulmonary ( heart failure ) are excluded. The disease is further characterized by an obstructive ventilation disorder.
Chronic bronchitis can be considered a component of chronic obstructive pulmonary disease (the other component being Emphysema).
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