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NBRC Registry Examination for Advanced Pulmonary Function Technologists Sample Questions:

1. Which of the following is a valid reason for using biologic controls for DLCo?

A) Assessing accuracy of the volume measuring device
B) Identifying the source of gas analyzer error
C) Establishing precision of the procedure
D) Determining the lower limit of normal values

2. 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

3. A patient who smokes three packs of cigarettes a day has a DLcoOf 45% of predicted. The patient is referred for exercise (stress) testing. Which of the following should a pulmonary function technologist select to evaluate oxygenation?

A) Pulse oximetry
B) Transcutaneous oxygen electrode
C) Arterial blood gas analysis
D) End-tidal oxygen tension

4. A patient is performing a flow-volume loop. A pulmonary function technologist observes equal decreases in expiratory and inspiratory flows resulting in plateaus. Patient effort is satisfactory, and he follows instructions well. The technologist should expect the patient to have a

A) Variable large airways obstruction
B) Small airways obstruction
C) Restrictive disorder
D) Fixed large airways obstruction.

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

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

Solutions: