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NBRC Registry Examination for Advanced Pulmonary Function Technologists Sample Questions:

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

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

3. A pulmonary function technologist is performing quality control on a nebulizer used in the 5-breath dosimeter bronchial challenge. The target output of the device is 0.09 mL, plus or minus 10%. After 10 actuations, the nebulizer output was 75 µL with a 2.0 mL initial saline dose in the nebulizer. The technologist should

A) Accept the results and begin using the device.
B) Open the vent before starting the bronchial challenge.
C) Add an exhalation filter and proceed with testing patients.
D) Clean and reevaluate this nebulizer.

4. Successive peak flow measurements made with a peak flowmeter on a subject previously diagnosed as having asthma yield the following results:

Which of the following is the best explanation for these?

A) Improper calibration of the peak flowmeter
B) Normal response
C) Increasing airways resistance in the subject
D) Condensation of moisture in the peak flowmeter

5. While reviewing exercise data, a pulmonary function technologist notes that the patient's anaerobic threshold occurred at 35% of the patient's VO2MAX. This indicates the patient has

A) a normal response to exercise
B) ventilatory limitation
C) given a submaximal effort
D) cardiac limitation

Solutions: