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NBRC Registry Examination for Advanced Pulmonary Function Technologists Sample Questions:

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

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

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

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

5. An isothermal lung analog has the following specifications:
5-L glass bottle
2000 g of steel wool
Density of steel wool 5 g/cm3
Volume of connectors and bulb 100 mi-Repeated FRC measurements in the plethysmograph result in a volume of 5.5 L.
Which of the following should a pulmonary function technologist do?

A) Recalculate the BTPS correction
B) Begin a biologic control program
C) Take the plethysmograph out of service
D) Remove 500 g of steel wool from the lung analog

Solutions: