Test Prep Test Prep Certifications RPFT Questions & Answers

• Question 11:

  A 6-year-old child has a history of repeated episodes of wheezing and shortness of breath. A pulmonary function technologist has difficulty obtaining repeatable spirometry results. Which of the following tests should be performed next?

  A. MVV

  B. DLco

  C. SGaw

  D. SpO2

  Correct Answer: A

• Question 12:

  When performing quality control in a body plethysmograph using a 5-L isothermal bottle, the VTG at shutter closure are as follows:

  

  A pulmonary function technologist should

  A. Service the mouth pressure transducer.

  B. Recalibrate the box pressure transducer.

  C. Check biological control before beginning testing.

  D. Proceed with patient testing.

  Correct Answer: A

• Question 13:

  A pulmonary function laboratory routinely tests five subjects as biologic controls. Acceptable instrument performance over time is indicated when measurements

  A. For each individual are within 2 standard deviations of the mean of previous measurements for each individual.

  B. For an individual are within 2 standard deviations of the mean of those for the group.

  C. Of the group as a whole agree with those predicted by linear regression for changes in age.

  D. Are within the 95% confidence interval predicted for an individual being tested.

  Correct Answer: D

• Question 14:

  The following biologic control measurements are obtained:

  

  Which of the following patterns appears in this plot?

  A. Shift

  B. In control

  C. Drift

  D. Noise

  Correct Answer: D

• Question 15:

  Airways resistance and specific conductance tests are requested for a 7-year-old child with asthma. Which of the following techniques is preferred?

  A. Panting with body plethysmography

  B. Quiet breathing with body plethysmography

  C. Interrupter

  D. Oscillation

  Correct Answer: A

• Question 16:

  Which of the following is the most reliable indicator that a patient has achieved his maximum exercise capacity during a progressive exercise (stress) test?

  A. Respiratory exchange ratio greater than 0.8

  B. Heart rate of 210/min

  C. VO2 remains stable with increasing workload

  D. Minute ventilation greater than 170 L/min

  Correct Answer: C

• Question 17:

  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 Raw.

  B. 25% decrease in FEFmax.

  C. 25% increase in FRC.

  D. 25% decrease in FEF25-75%.

  Correct Answer: C

• Question 18:

  A pulmonary function technologist is reviewing an asthma action plan. The patient takes a low-dose inhaled corticosteroid and a long-acting beta2-agonist twice daily. The patient's personal best peak flow is 600 L/min. Which of the following instructions should be given to the patient when the peak flow drops to 500 L/min?

  A. Add montelukast (Singular).

  B. Continue the current regimen.

  C. Go to the emergency department.

  D. Double the steroid dose.

  Correct Answer: A

• Question 19:

  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.

  Correct Answer: C

• Question 20:

  Results of two blood gas samples drawn from the same patient, 30 minutes apart, are shown below:

  

  Which of the following is the most likely explanation for these differences?

  A. The patient's minute ventilation has increased.

  B. The patient has developed a pneumothorax.

  C. The 10:30 blood sample has been contaminated with air.

  D. The 10:30 blood sample contains an excess of heparin solution.

  Correct Answer: A