Which term stands for the respiratory diagnostic procedure used to assess lung function?

• A. PFT
• B. Emphysema
• C. Asthma
• D. Wheeze

Answer: (A)

Pulmonary Function Test is the respiratory diagnostic procedure used to assess how well the lungs are functioning. PFTs cover a set of tests that measure how air moves in and out, lung volumes and capacities, and how effectively gases are transferred in the lungs. A key component is spirometry, which helps quantify airway obstruction or restriction, and other parts may assess diffusion capacity and overall lung volumes. This makes PFTs the appropriate term for the test category used to evaluate lung function. Emphysema is a chronic lung disease, asthma is a reversible airway condition, and wheeze is a sound heard with airway narrowing—none of these describe the diagnostic procedure itself.