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NBRC Registry Examination for Advanced Pulmonary Function Technologists Sample Questions:

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

2. To check the reliability of a pulse oximeter reading, a pulmonary function technologist should

A) Calculate the SaO2from pH and PaO2
B) Have the patient hyperventilate
C) Measure the hematocrit
D) Perform hemoximetry

3. Which of the following is the most reliable method to estimate the effectiveness of standard procedures to minimize the risk of cross-contamination during spirometry testing in a pulmonary function laboratory?

A) Ask technologists if they wash their hands before each test
B) Observe the handwashing behavior of each technologist.
C) Ask patients tested about laboratory hygiene.
D) Count the number of disposable mouthpieces used for 1 week.

4. A 12-year-old patient completed an evaluation for exercise-induced asthma in the pulmonary function laboratory. The patient completed six minutes of exercise on a treadmill with a heart rate of 145 to 150/min.
The following spirometry data were collected:

A pulmonary function technologist should conclude that the exercise test is

A) Adequate workload with a positive response
B) Adequate workload with a negative response
C) Inadequate workload with a positive response
D) Inadequate workload with a negative response

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) cardiac limitation
C) ventilatory limitation
D) given a submaximal effort

Solutions: