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NBRC Registry Examination for Advanced Pulmonary Function Technologists Sample Questions:

1. Airways resistance and specific conductance tests are requested for a 7-year-old child with asthma. Which of the following techniques is preferred?

A) Panting with body plethysmography
B) Oscillation
C) Quiet breathing with body plethysmography
D) Interrupter

2. A 54-year-old male who smokes presents to the pulmonary laboratory for chronic cough and dyspnea on exertion. PFT and blood gas results show the following:

Which of the following should the pulmonary function technologist recommend?

A) DLcomeasurement
B) Lung volume measurement
C) Trial of varenicline (Chantix)
D) Oxygen therapy with exercise

3. Prior to performing a multiple-breath U2 washout test, a pulmonary function technologist is unable to zero the H2 gas analyzer. Which of the following may be responsible?

A) Inadequate vacuum
B) Condensation of water
C) Exhausted fuel cell
D) Chopper motor failure

4. A pulmonary function laboratory routinely tests five subjects as biologic controls. Acceptable instrument performance over time is indicated when measurements

A) Are within the 95% confidence interval predicted for an individual being tested.
B) For an individual are within 2 standard deviations of the mean of those for the group.
C) For each individual are within 2 standard deviations of the mean of previous measurements for each individual.
D) Of the group as a whole agree with those predicted by linear regression for changes in age.

5. A pulmonary function technologist is performing an exercise (stress) test on a patient with severe COPD. As the test progresses, the patient shows signs of increasing dyspnea. Measurements of inspiratory capacity decreased from 2.0 L to 1.5 L. Which of the following most likely occurred?

A) dynamic hyperinflation
B) acute decrease in FRC
C) disconnected gas sampling line
D) drift in the flow transducer

Solutions: