Definition
Chronic obstructive pulmonary disease (COPD) makes it difficult to push air out of the lungs. The oxygen poor air will build up. If the lungs are filled with this air, there is no room for fresh, oxygen rich air. COPD includes:
- Emphysema —air sacs of lungs are damaged
- Chronic bronchitis —disorder of the large airways of lungs
The changes to lung tissue differ with the two diseases. However, the causes and treatment are similar.
Normal vs Emphysemic Lung
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