What causes trapped air in lungs?

Related questions

1. What's the average peak flow reading?
2. Can you increase lung capacity?
3. What is normal lung capacity?
4. What is a full lung function test?
5. Can stress cause hyperinflated lungs?
6. What is the FVC in obstructive lung disease?
7. How can you tell the difference between asthma and COPD?
8. Can you live with 50 percent lung capacity?
9. What is a good reading on a peak flow meter?
10. How long can healthy lungs hold breath?

Tags

1. #bulla
2. #trapped
3. #pneumothorax
4. #tissue
5. #pneumothoax
6. #causes
7. #mostly
8. #spontaneous
9. #cause
10. #bubbles
11. #asthma
12. #caused
13. #smokers
14. #break
15. #diseases
16. #secondary
17. #found
18. #these
19. #emphysema
20. #produce