PFT TEST; QUESTIONS AND ANSWERS
In which of the following conditions is total lung capacity (TLC) always reduced?
Correct Answer-restrictive lung disease
The vital capacity includes: Correct Answer-I. tidal volume
II. inspiratory reserve volume
III. expiratory reserve volume
PFT TEST; QUESTIONS AND ANSWERS
In which of the following conditions is total lung capacity (TLC) always reduced?
Correct Answer-restrictive lung disease
The vital capacity includes: Correct Answer-I. tidal volume
II. inspiratory reserve volume
III. expiratory reserve volume
Which of the following provides the best information when determining
obstructive disease? Correct Answer-FEV1/FVC%
In terms of other volumes and capacities, how can VC be defined? Correct
Answer-VT+IRV+ERV
What is the most common measurement of pulmonary mechanics during
pulmonary function testing? Correct Answer-forced vital capacity
A patient has a VC of 4200 mL, and FRC of 3300 mL, and an ERV of 1500 mL.
What is the RV? Correct Answer-1800mL
, PFT TEST; QUESTIONS AND ANSWERS
Which of the following volumes or capacities can not be measured by simple
spirometry? Correct Answer-I. functional residual capacity (FRC)
II. expiratory reserve volume (ERV)
In which of the following conditions is total lung capacity (TLC) always reduced?
Correct Answer-restrictive lung disease
In order for patients with obstructive lung disease to be considered to have a
significant reversible component, the post bronchodilator FEV1 (forced
expiratory volume in the first second) should be at least what percentage
greater than the pre-treatment FEV1? Correct Answer-10%-15%
A 65 year-old man undergoes pulmonary function testing as part of a research
study. He has no pulmonary complaints. He has never been a smoker but has a
history of asbestos exposure while serving in the Navy. His pulmonary function
test results are as follows:
TestActualPredicted% PredictedFVC (L)4.394.32102FEV1
(L)3.203.3795FEV1/FVC0.730.78N/AFRC (L)3.173.2598RV (L)2.542.32109TLC
(L)6.866.09113 Correct Answer-this patient has normal spirometry and lung
volumes.
, PFT TEST; QUESTIONS AND ANSWERS
When used to determine FRC, the body plethysmograph operates on which of
the following physical principles? Correct Answer-Boyle's law
After a resting expiration, air still remains in the lungs. What is the volume
called? Correct Answer-FRC
For a patient diagnosed as having pulmonary fibrosis, which of the following
would represent his pulmonary function study? TLC VC RV ERV Correct
Answer-decreased decreased decreased decreased
Please interpret the following PFT:
Predicted Actual %Pred
FVC(L) 6.11 4.96 81%
FEV1(L) 5.32 5.40 101%
Fev1/FVC(%) 87% 108% Correct Answer-normal PFT
In order for patients with obstructive lung disease to be considered to have a
significant reversible component, the post bronchodilator FEV1 (forced
expiratory volume in the first second) should be at least what percentage
greater than the pre-treatment FEV1? Correct Answer-10%-15%
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