RPFT Online Practice Questions and Answers

During the calibration and set-up of the metabolic stress testing system for a patient breathing supplemental oxygen, which of the following gas concentrations will ensure accurate calibration of the system?

A. Option A

B. Option B

C. Option C

D. Option D

A pulmonary function technologist can calculate which of the following if values for pH, PaO2, SaO2, SvO2 PvO2, VO2, and Hb are obtained?

A. Cardiac output

B. RER

C. VD/VT

D. Stroke volume

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 cell O2 analyzer is displaying 15.2%. Which of the following is the best explanation for this finding?

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

B. The analyzer is responding to P1O2.

C. F1O2 decreases with increasing altitude.

D. The fuel cell needs to be changed.

A patient who smokes three packs of cigarettes a day has a DLco Of 45% of predicted. The patient is referred for exercise (stress) testing. Which of the following should a pulmonary function technologist select to evaluate oxygenation?

A. Transcutaneous oxygen electrode

B. Arterial blood gas analysis

C. Pulse oximetry

D. End-tidal oxygen tension

The following results were obtained from spirometry before and after a bronchodilator administration:

Which of the following is the correct interpretation of these data?

A. Restrictive pattern with positive bronchodilator response

B. Restrictive pattern with no bronchodilator response

C. Obstructive pattern with positive bronchodilator response

D. Obstructive pattern with no bronchodilator response

Which of the following is a common reason for an unstable zero reading from an infrared analyzer?

A. Debris in the sampling system

B. Inaccurate calibration gases

C. Exhausted DRIERITE

D. Excess room humidity

In which of the following patients would an end-tidal CO2 most likely produce values that are inconsistent with PaCO2?

A. 50 year old with mild scleroderma

B. 42 year old with moderate COPD

C. 20 year old who smokes cigarettes

D. 12 year old with kyphoscoliosis

The following data are obtained after an exercise (stress) test for exercise-induced asthma:

Based on these data, the post-exercise FEVi represents a decrease of approximately

A. 67%

B. 20%

C. 17%

D. 13%

A physician orders smoking cessation counseling for a 60-year-old male with a new diagnosis of CHF and COPD. The patient has failed several attempts to quit smoking using nicotine gum. Which of the following should a pulmonary function technologist recommend?

A. Switch to a nicotine patch.

B. Use alternative medicine such as acupuncture.

C. Add a trial of bupropion (Zyban).

D. Increase the dosage of the nicotine replacement.

Using a peak flowmeter, a pulmonary function technologist obtains the following:

The technologist should

A. Conclude that bronchodilatation has occurred.

B. Report the average of the two best efforts.

C. Perform at least one more peak flow trial.

D. Report the patient's peak flow as 750 L/min.