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NBRC Registry Examination for Advanced Pulmonary Function Technologists Sample Questions:

1. A patient's bronchial provocation test was interpreted as positive for hyperreactive airways. Considering changes from a pre-challenge baseline, all of the following are consistent with this interpretation EXCEPT a

A) 25% decrease in FEF25-75%.
B) 25% decrease in Raw.
C) 25% increase in FRC.
D) 25% decrease in FEFmax.

2. A physician orders smoking cessation counseling for a 60-year-old male with a new diagnosis of CHF and COPD. The patient has failed several attempts to quit smoking using nicotine gum. Which of the following should a pulmonary function technologist recommend?

A) Increase the dosage of the nicotine replacement.
B) Switch to a nicotine patch.
C) Add a trial of bupropion (Zyban).
D) Use alternative medicine such as acupuncture.

3. While assessing a patient's expired gases at rest prior to exercise, a pulmonary function technologist calculates the RER as 0.6. Which of the following is the most likely explanation?

A) The patient has an elevated VDAVT
B) The expired gas is contaminated with air
C) A gas analyzer is malfunctioning
D) The patient is hyperventilating

4. When performing quality control in a body plethysmograph using a 5-L isothermal bottle, the VTGat shutter closure are as follows:

A pulmonary function technologist should

A) Recalibrate the box pressure transducer.
B) Check biological control before beginning testing.
C) Service the mouth pressure transducer.
D) Proceed with patient testing.

5. A helium dilution test has just been performed on a patient. The following results are obtained:
FRC 5.0 L
VC 4.0 L
ERV 1.5 L
TLC was calculated to be 6.0 L by plethysmography. From this information, a pulmonary function technologist should conclude that the patient

A) Was turned into the helium dilution circuit at a lung volume considerably above FRC.
B) Did not remain in the helium dilution breathing circuit long enough for equilibration.
C) Had inadequate intrapulmonary mixing of inspired gas, resulting in an erroneous FRC.
D) Did not perform the slow vital capacity properly, resulting in too low an FRC by helium dilution.

Solutions: