What is the air remaining in the lung after normal expiration?
ATidal Volume (TV)
BResidual Volume (RV)
CFunctional Residual Capacity (FRC)
DVital Capacity (VC)
A 50-year-old man who has worked in a coal mining factory for 16 years develops symptoms of progressively worsening breathlessness and cough with expectoration. Spirometry reveals values of FEV1 - 1.4 L and FVC 2.8 L. What could be the cause?
ASilicosis
BHypersensitivity pneumonitis
CCOPD
DIdiopathic pulmonary fibrosis
Which of the following statements about lung compliance is false?
ADecreased in emphysema
BTotal compliance is 0.2 L/cm H2O
CA measure of lung distensibility
DChange in volume per unit change in pressure
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