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NBRC Registry Examination for Advanced Pulmonary Function Technologists Sample Questions:

1. Which of the following thresholds for a clinically significant change in lung function from the beginning to the end of a methacholine challenge test is significant?

A) A decline of more than 20% in FEV1
B) An increase of more than 20% in airway resistance
C) A decline of more than 30% in FEF25-75%
D) A decline of more than 20% in inspiratory capacity

2. A 45-year-old female with sarcoidosis has pulmonary function tests annually. The following data have been recorded:

A pulmonary function technologist should conclude that

A) The patient's restrictive component has worsened.
B) The patient has developed mild obstructive airway disease.
C) Incorrect predicted values have been used.
D) The patient has a normal rate of loss for FEV1.

3. A pulmonary function technologist is performing a single-breath diffusion capacity (DLCO) test. Which of the following factors is most likely to cause a falsely elevated DLCO result?

A) Poor inspiratory effort
B) Pulmonary hemorrhage
C) Severe anemia
D) Alveolar fibrosis

4. During an exercise study, the RER will equal the RQ only when the patient is at

A) The anaerobic threshold
B) Rest
C) Peak exercise
D) Steady state

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

Solutions: