How does pulmonary interstitial emphysema (PIE) affect lung function?
1. Increased airway resistance
2. Decreased lung compliance
3. Increased lung compliance
4. Decreased airway resistance
a. 1
b. 1, 2
c. 3, 4
d. 2, 4
D
PIE primarily causes decreased lung compliance by hyperinflating the lungs. Additionally, gas trapped within the interstitial cuffs compresses the airways and increases airway resistance.
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