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NBRC Registry Examination for Advanced Pulmonary Function Technologists Sample Questions:

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

2. During a cardiopulmonary stress test using breath-by-breath gas analysis, a pulmonary function technologist notices that the VO2suddenly decreases. Which of the following may explain this change?
1. The patient has achieved anaerobic threshold.
2. The measurement of the expired gas volumes is inaccurate.
3. O2analyzer "phase delay" has increased.
4. There is a leak in the tubing or mouthpiece.

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

3. A pulmonary function laboratory routinely tests five subjects as biologic controls. Acceptable instrument performance over time is indicated when measurements

A) For an individual are within 2 standard deviations of the mean of those for the group.
B) Are within the 95% confidence interval predicted for an individual being tested.
C) For each individual are within 2 standard deviations of the mean of previous measurements for each individual.
D) Of the group as a whole agree with those predicted by linear regression for changes in age.

4. A patient's vital capacity is slightly reduced, the FEWFVC is normal, and the uncorrected DLco is increased.
Which of the following is the most likely diagnosis?

A) kyphoscoliosis
B) polycythemia vera
C) diffuse pulmonary fibrosis
D) diaphragmatic hemiparesis

5. The following biologic control data ranges were established:
The following additional data were obtained when assessing the equipment:
Which of the following should a pulmonary function technologist do?

A) Change the DLcoCO analyzer.
B) Change the CO2and H2O absorbers.
C) Check the flow sensor.
D) Continue testing patients.

Solutions: