#1
Which of the following is not a parameter measured in pulmonary function tests?
Cardiac output (CO)
ExplanationCardiac output is not measured in pulmonary function tests.
#2
Which pulmonary function test measures the maximum volume of air a person can exhale after a maximum inhalation?
Forced vital capacity (FVC)
ExplanationFVC measures maximal exhalation volume after maximal inhalation.
#3
Which of the following pulmonary function tests measures the volume of air inspired and expired with each breath during quiet breathing?
Tidal volume (TV)
ExplanationTV measures air volume during normal breathing.
#4
Which parameter of pulmonary function tests indicates the total amount of air a person's lungs can hold?
Total lung capacity (TLC)
ExplanationTLC indicates maximum lung capacity.
#5
Which of the following spirometry findings is consistent with obstructive lung disease?
Decreased FEV1/FVC ratio
ExplanationDecreased FEV1/FVC ratio indicates obstructive lung disease.
#6
What is the primary function of the diffusion capacity of the lungs for carbon monoxide (DLCO) test?
Measuring gas exchange efficiency
ExplanationDLCO test primarily measures gas exchange efficiency.
#7
What does the FEV1/FVC ratio indicate?
The ratio of forced expiratory volume in 1 second to forced vital capacity
ExplanationFEV1/FVC ratio indicates lung function efficiency.
#8
Which of the following conditions is characterized by a reduced FEV1/FVC ratio?
Obstructive lung disease
ExplanationReduced FEV1/FVC ratio indicates obstructive lung disease.
#9
Which of the following measures can affect pulmonary function test results?
All of the above
ExplanationVarious factors can influence pulmonary function test results.
#10
Which pulmonary function test measures the volume of air remaining in the lungs after a maximal exhalation?
Residual volume (RV)
ExplanationRV measures leftover air in the lungs post-maximal exhalation.
#11
Which of the following conditions is associated with an elevated DLCO?
Interstitial lung disease
ExplanationElevated DLCO is associated with interstitial lung disease.
#12
What does a decreased DLCO indicate?
Restrictive lung disease
ExplanationDecreased DLCO suggests restrictive lung disease.
#13
Which pulmonary function test is most useful in diagnosing obstructive lung diseases?
Forced expiratory volume in 1 second (FEV1)
ExplanationFEV1 is crucial for diagnosing obstructive lung diseases.
#14
What does a reduced TLC indicate?
Restrictive lung disease
ExplanationReduced TLC suggests restrictive lung disease.
#15
Which pulmonary function test is used to assess how well the lungs can move oxygen into the blood and remove carbon dioxide?
Diffusion capacity of the lungs for carbon monoxide (DLCO)
ExplanationDLCO assesses lung gas exchange efficiency.
#16
Which pulmonary function test measures the volume of air that can be exhaled as quickly and forcefully as possible after maximum inhalation?
Maximal expiratory flow-volume (MEFV)
ExplanationMEFV measures maximum exhalation volume.
#17
Which pulmonary function test measures the ability of the lungs to transfer oxygen from the alveoli into the blood?
Diffusing capacity of the lungs for carbon monoxide (DLCO)
ExplanationDLCO measures lung oxygen transfer efficiency.