The clinic nurse is caring for a patient who has been diagnosed with emphysema and who has just had a pulmonary function test (PFT) ordered. The patient asks, "What exactly is this test for?" What would be the nurse's best response?
A) "A PFT measures how much air moves in and out of your lungs when you breathe."
B) "A PFT measures how much energy you get from the oxygen you breathe."
C) "A PFT measures how elastic your lungs are."
D) "A PFT measures whether oxygen and carbon dioxide move between your lungs and your blood."
Ans: A
Feedback:
PFTs are routinely used in patients with chronic respiratory disorders. They are performed to assess respiratory function and to determine the extent of dysfunction. Such tests include measurements of lung volumes, ventilatory function, and the mechanics of breathing, diffusion, and gas exchange. Lung elasticity and diffusion can often be implied from PFTs, but they are not directly assessed. Energy obtained from respiration is not measured directly.
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