Free Access NBRC.RPFT.v2022-10-26.q82 Practice Test (Page 4)

Question 11

A polarographic oxygen analyzer used to measure expired gas in a metabolic system should always be calibrated with

A.Gas concentrations higher and lower than the expected measurement

B.Air and fully saturated 100% oxygen.

C.100% oxygen and 100% nitrogen, fully saturated

D.Oxygen mixtures containing 4% and 8% carbon dioxide

Question 12

A patient with severe airflow limitation pants too rapidly (> 3 breaths/second) against a closed shutter in a body plethysmograph. Which of the following will occur?

A.VTG overestimation

B.VTG underestimation

C.RAW overestimation

D.RAW underestimation

Question 13

While setting up an exercise laboratory in a city with an altitude of 8,600 ft (2,775 m), a pulmonary function technologist notices the fuel cellO2analyzer is displaying 15.2%. Which of the following is the best explanation for this finding?

A.The fuel cell needs to be changed.

B.The analyzer is responding to P1O2.

C.F1O2decreases with increasing altitude.

D.This exercise system will not work at high altitude.

Question 14

A 45-year-old female with sarcoidosis has pulmonary function tests annually. The following data have been recorded:

A pulmonary function technologist should conclude that

A.The patient's restrictive component has worsened.

B.The patient has developed mild obstructive airway disease.

C.Incorrect predicted values have been used.

D.The patient has a normal rate of loss for FEV1.

Question 15

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.There is air contamination since the PaCO2is so low.

B.Blood gas results are normal for someone at end-exercise.

C.IV solution has contaminated the blood sample.

D.The test indicates a right-to-left shunt.

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