When evaluating the pulmonary function test results for a COPD client, which one correlates to the mismatch of ventilation and perfusion associated with this diagnosis?
A) Forced vital capacity (FVC) is elevated.
B) Forced expiratory volume (FEV) is decreased.
C) Total lung capacity (TLC) is decreased.
D) Marked decrease in residual volume (RV).
Ans: B
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In clients with chronic lung disease, the FVC is decreased, the FEV1.0 is decreased, and the ratio of FEV1.0 to FVC is decreased. Lung volume measurements reveal a marked increase in RV, an increase in TLC, and elevation of the RV-to-TLC ratio.
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