Test Prep Test Prep Certifications RPFT Questions & Answers

• Question 51:

  A biologic control subject has a FRCpleth of 4.0 ?.3 L at panting frequencies between 60 and 70/min.

  During a QC run, the subject pants at 55/min and a FRCpleth of 3.90 L is recorded.

  Which of the following is the most appropriate action to take?

  A. Recalibrate the mouth pressure transducer and repeat the test.

  B. Repeat the test, coaching the subject to pant more slowly.

  C. Continue using the system because it is within control limits.

  D. Take the plethysmograph out of service pending corrective maintenance.

  Correct Answer: C

• Question 52:

  Prior to an exercise study, a pulmonary function technologist finds that the patient's RER is 1.13. Which of the following best explains this finding?

  A. Carbohydrate metabolism

  B. Protein metabolism

  C. Hypoventilation

  D. Hyperventilation

  Correct Answer: D

• Question 53:

  A patient is performing a flow-volume loop. A pulmonary function technologist observes equal decreases in expiratory and inspiratory flows resulting in plateaus. Patient effort is satisfactory, and he follows instructions well. The technologist should expect the patient to have a

  A. Small airways obstruction

  B. Restrictive disorder

  C. Variable large airways obstruction

  D. Fixed large airways obstruction.

  Correct Answer: B

• Question 54:

  The following data were obtained from a bronchial challenge test:

  

  APC20 of 2 mg/mL was obtained the next day in another laboratory. Which of the following is the most likely explanation for these data?

  A. The two test results are within day-to-day variability.

  B. Incorrect doses of methacholine were administered.

  C. The spirometer accuracy drifted during the test.

  D. The patient's effort was inconsistent.

  Correct Answer: C

• Question 55:

  After finishing the exercise portion of a test for exercise-induced bronchospasm, a patient complains of difficulty "catching her breath." A pulmonary function technologist should

  A. Give the patient a bronchodilator.

  B. Administer oxygen at 2 L/min.

  C. Instruct the patient to breathe normally.

  D. Have the patient perform an FVC maneuver.

  Correct Answer: A

• Question 56:

  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

  Correct Answer: B

• Question 57:

  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

  Correct Answer: B

• Question 58:

  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. Inadequate vacuum

  B. Exhausted fuel cell

  C. Chopper motor failure

  D. Condensation of water

  Correct Answer: D

• Question 59:

  A pulmonary function technologist is asked to select gas concentrations to simulate pediatric patients' exhaled concentrations during a DLco simulation. Which of the following FECO concentrations should the technologist select?

  A. 0.200

  B. 0.300

  C. 0.400

  D. 0.100

  Correct Answer: B

• Question 60:

  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. IV solution has contaminated the blood sample.

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

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

  D. There is air contamination since the PaCO2 is so low.

  Correct Answer: B