PFT QUIZ 2 QUESTIONS AND
ANSWERS WITH COMPLETE
SOLUTIONS 100% CORRECT!!!
After completing three flow-volume loop tests at the bedside, the therapist
sees that some Forced Vital Capacity (FVC) results are greater than the Slow
Vital Capacity (SVC) results. What should the therapist do?
✔✔ C. Repeat the SVC maneuvers
Explanation:
SVC values should generally be equal to or greater than FVC in healthy
individuals. If FVC is higher, it may indicate suboptimal effort or error during the
SVC test, so it should be repeated.
How is a Fleisch pneumotachometer calibrated?
✔✔
It is calibrated using a 3-liter syringe at various flow rates, or sometimes with a
rotameter for flow verification.
How is a Body Box (plethysmograph) calibrated?
✔✔
Calibrated using a sinusoidal (sine wave) rotary pump, which mimics breathing
patterns to ensure accurate lung volume measurements.
How is a Wright respirometer calibrated?
✔✔
Calibrated with a 1.5-liter super syringe at a single, consistent flow rate.
What equipment is used to calibrate the 5% and 10% CO₂ readings on a
blood gas analyzer?
✔✔
, Carbon dioxide gas mixtures (5% and 10%) are used specifically to verify and
calibrate CO₂ sensor accuracy in blood gas analyzers.
Equipment to calibrate 0% and 12% or 20% - ANSWER✔✔oxygen in a blood gas
analyzer
Equipment to calibrate 21% and 100% - ANSWER✔✔Oxygen in a galvanic fuel
cell oxygen analyzer
To determine potential post-operative risk of a patient preparing for surgery, the
respiratory therapist should recommend which of the following tests?
a. cardiac stress test
b. pulmonary diffusion studies
c. basic spirometry
d. pulmonary stress test - ANSWER✔✔c. basic spirometry
Evaluation of maximum expiratory pressure (MEP) is most useful in evaluating
which of the following?
a. inspiratory muscle strength
b. presence of restrictive defect
c. fixed upper airway obstruction
d. forcefulness of cough - ANSWER✔✔d. forcefulness of cough
Which pulmonary function values to be most consistent with a restrictive lung
disease?
a. SVC of 67% of predicted
b. Fev1 of 55% of predicted
ANSWERS WITH COMPLETE
SOLUTIONS 100% CORRECT!!!
After completing three flow-volume loop tests at the bedside, the therapist
sees that some Forced Vital Capacity (FVC) results are greater than the Slow
Vital Capacity (SVC) results. What should the therapist do?
✔✔ C. Repeat the SVC maneuvers
Explanation:
SVC values should generally be equal to or greater than FVC in healthy
individuals. If FVC is higher, it may indicate suboptimal effort or error during the
SVC test, so it should be repeated.
How is a Fleisch pneumotachometer calibrated?
✔✔
It is calibrated using a 3-liter syringe at various flow rates, or sometimes with a
rotameter for flow verification.
How is a Body Box (plethysmograph) calibrated?
✔✔
Calibrated using a sinusoidal (sine wave) rotary pump, which mimics breathing
patterns to ensure accurate lung volume measurements.
How is a Wright respirometer calibrated?
✔✔
Calibrated with a 1.5-liter super syringe at a single, consistent flow rate.
What equipment is used to calibrate the 5% and 10% CO₂ readings on a
blood gas analyzer?
✔✔
, Carbon dioxide gas mixtures (5% and 10%) are used specifically to verify and
calibrate CO₂ sensor accuracy in blood gas analyzers.
Equipment to calibrate 0% and 12% or 20% - ANSWER✔✔oxygen in a blood gas
analyzer
Equipment to calibrate 21% and 100% - ANSWER✔✔Oxygen in a galvanic fuel
cell oxygen analyzer
To determine potential post-operative risk of a patient preparing for surgery, the
respiratory therapist should recommend which of the following tests?
a. cardiac stress test
b. pulmonary diffusion studies
c. basic spirometry
d. pulmonary stress test - ANSWER✔✔c. basic spirometry
Evaluation of maximum expiratory pressure (MEP) is most useful in evaluating
which of the following?
a. inspiratory muscle strength
b. presence of restrictive defect
c. fixed upper airway obstruction
d. forcefulness of cough - ANSWER✔✔d. forcefulness of cough
Which pulmonary function values to be most consistent with a restrictive lung
disease?
a. SVC of 67% of predicted
b. Fev1 of 55% of predicted
