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NBRC Registry Examination for Advanced Pulmonary Function Technologists Sample Questions:

1. When performing exercise testing on a biologic control, the measurements obtained should be compared with

A) At least two other biologic controls being tested.
B) Predicted values used for the biologic control's height and weight
C) Previous tests performed on the biologic control.
D) The patient population that will be tested.

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

Which of the following values is INCONSISTENT?

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

3. A body plethysmograph box pressure transducer fails the electronic calibration check after multiple attempts.
Which of the following should a pulmonary function technologist do?
1. Perform a biologic control test
2. Inspect the door seal.
3. Re-zero the box pressure transducer.
4. Perform a physical pressure calibration.

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

4. During a linearity check of a flow sensor in a plethysmograph with a 3-liter calibration syringe, a pulmonary function technologist observes the following:

Which of the following should the technologist do?

A) Recalibrate and repeat the linearity check.
B) Record these results and begin testing.
C) Look for an obstruction in the flow sensor.
D) Perform an additional flow check at 10 L/sec.

5. When using a variable pressure plethysmograph, a leak in the door seal that develops subsequent to calibration will cause underestimation of

A) Alveolar pressure
B) vital capacity
C) Raw
D) VTG

Solutions: