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NBRC RPFT Exam Questions

NBRC RPFT Exam Questions Answers

Registry Examination for Advanced Pulmonary Function Technologists

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  115 Total Questions
  Updated July 25,2026
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NBRC RPFT Practice Test Questions ( Updated) – Real Exam Questions & Dumps PDF

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NBRC RPFT Sample Questions – Free Practice Test & Real Exam Prep

Question #1

A smoking cessation program using a nicotine patch is started for all smokers in a factory. Results revealed that smokers who reported they had quit had exhaled carbon monoxide levels less than 6 ppm. A pulmonary function technologist should conclude that

  • A. The program was effective in accomplishing smoking cessation. 
  • B. The smokers had refrained from smoking for the previous 6 hours. 
  • C. The smokers were not being truthful about smoking cessation. 
  • D. Adifferent method of smoking cessation should be offered to improve outcomes. 
Answer: A 
Question #2

A pulmonary function technologist is performing quality control on a nebulizer used in the 5- breath dosimeter bronchial challenge. The target output of the device is 0.09 mL, plus or minus 10%. After 10 actuations, the nebulizer output was 75µL with a 2.0 mL initial saline dose in the nebulizer. The technologist should 

  • A. Open the vent before starting the bronchial challenge. 
  • B. Add an exhalation filter and proceed with testing patients. 
  • C. Clean and reevaluate this nebulizer. 
  • D. Accept the results and begin using the device. 
Answer: D
Question #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 test2. Inspect the door seal. 3. Re-zero the box pressure transducer. 4. Perform a physical pressure calibration.

  • A. 1,2, and 4 only 
  • B. 1,3, and 4 only 
  • C. 2,3, and 4 only 
  • D. 1,2, and 3 only 
Answer: D
Question #4

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. VTGunderestimation
  • B. VTGoverestimation  
  • C. RAWunderestimation 
  • D. RAWoverestimation 
Answer: D 
Question #5

Which of the following information reported from a recent methacholine challenge test best summarizes the patient's bronchial hyperresponsiveness?

  • A. patient reported chest tightness and a cough 
  • B. diluent FEV1= 92% predicted
  • C. postbronchodilator recovery FEV1=106% baseline 
  • D. PC20= 2.3 mg/mL 
Answer: A
Question #6

While performing duplicate blood gas analyses, a pulmonary function technologist notes that the second instrument gives consistently higher values forPaCO2and PaO2. Which of the following is the most probable cause of higher readings from the second instrument?

  • A. The sample chamber temperature is greater than 37° C 
  • B. An excessive delay occurredbetween running the two samples
  • C. The PO2and PCO2electrodemembranes have protein build-up 
  • D. The sample chamber has a bacterial contaminate 
Answer: A 
Question #7

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  
Answer: A 
Question #8

A pulmonary function technologist can calculate which of the following if values for pH, PaO2, SaO2, SvO2PvO2, VO2, and Hb areobtained?

  • A. Cardiac output 
  • B. RER
  • C. VD/VT 
  • D. Stroke volume 
Answer: A
Question #9

During an exercise study, the RER will equal the RQ only when the patient is at 

  • A. Steady state 
  • B. Peak exercise
  • C. The anaerobic threshold 
  • D. Rest  
Answer: A
Question #10

During an exercise study, a pulmonary function technologist notices the systolic blood pressure increased to 270 mm Hg using an automated cuff. Which of the following should the technologist do?

  • A. Terminate the test and administer oxygen by nasal cannula. 
  • B. Continue the test and recheck blood pressure using manual cuff method
  • C. Terminate the test at this time and recheck blood pressure. 
  • D. Continue the test if within 5 minutes of completion. 
Answer: A
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