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NBRC Registry Examination for Advanced Pulmonary Function Technologists Sample Questions:

1. While setting up an exercise laboratory in a city with an altitude of 8,600 ft (2,775 m), a pulmonary function technologist notices the fuel cell O2analyzer is displaying 15.2%. Which of the following is the best explanation for this finding?

A) The analyzer is responding to P1O2.
B) The fuel cell needs to be changed.
C) F1O2decreases with increasing altitude.
D) This exercise system will not work at high altitude.

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

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

3. Which of the following problems may be identified by using an isothermal lung analog to perform quality control on a body plethysmograph?
1. Improperly calibrated mouth pressure transducer
2. Obstructed or perforated pneumotachometer
3. Increase in mechanical resistance
4. Malfunctioning box pressure transducer

A) 3 and 4 only
B) 1 and 4 only
C) 2 and 3 only
D) 1 and 2 only

4. The following blood gas report is questioned by the attending physician:

Which of the following values is INCONSISTENT?

A) PaCO2
B) BE
C) pH
D) HCO3

5. The following arterial blood gas results are obtained during the final workload of a cardiopulmonary exercise test:

Which of the following best explains these results?

A) There is air contamination since the PaCO2is so low.
B) Blood gas results are normal for someone at end-exercise.
C) The test indicates a right-to-left shunt.
D) IV solution has contaminated the blood sample.

Solutions: