Patients with pulmonary fibrosis show decreased lung tissue compliance and diminished forced vital capacity (FVC). Pulmonary fibrosis is a type of:
A. Obstructive disease
B. Restrictive disease
C. Hyperreactive airway disease
D. None of the above
ANS: B
Restrictive lung diseases include pulmonary disorders, such as pneumonitis, pulmonary fibrosis, and sarcoidosis, as well as extrinsic causes, such as kyphosis, scoliosis, or obesity. In all these disorders there is diminished lung capacity and decreased compliance of lung tissue.
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