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NBRC Registry Examination for Advanced Pulmonary Function Technologists Sample Questions:

1. 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) 1 and 2 only
D) 2 and 3 only

2. At the end of a progressive exercise study of a healthy adult male, RER would be approximately what value?

A) 1.00
B) 0.83
C) 1.65
D) 1.25

3. A patient's bronchial provocation test was interpreted as positive for hyperreactive airways. Considering changes from a pre-challenge baseline, all of the following are consistent with this interpretation EXCEPT a

A) 25% decrease in FEF25-75%.
B) 25% decrease in Raw.
C) 25% increase in FRC.
D) 25% decrease in FEFmax.

4. The following results are obtained:

The RV/TLC ratio from these data is consistent with which of the following?

A) Normal lung volumes
B) Obstructive defect
C) Combined obstructive/restrictive defect
D) Restrictive defect

5. A pulmonary function technologist is reviewing results of a recent mechanical diffusion simul-ation using a 3- liter syringe. The test was conducted at a room temperature of 22° C. The following BTPS results were reported:
Which of the following should the technologist do?

A) Recalibrate the gas analyzer.
B) Recalibrate the pneumotachometer.
C) Change the calibration gases.
D) Proceed with testing.

Solutions: