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NBRC RPFT Exam
Registry Examination for Advanced Pulmonary Function Technologists (Page 7 )

Updated On: 7-Feb-2026
Page 4 of 24
PDF with 111 Questions

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

  1. Open the vent before starting the bronchial challenge.
  2. Add an exhalation filter and proceed with testing patients.
  3. Clean and reevaluate this nebulizer.
  4. Accept the results and begin using the device.

Answer(s): D



To assure linearity of an oxygen analyzer, calibrate with

  1. Three test gases within the operating range of the instrument
  2. Air
  3. 100% 02
  4. Two test gases within the operating range of the instrument

Answer(s): A



At the end of a progressive exercise study of a healthy adult male, RER would be approximately what value?

  1. 1.65
  2. 0.83
  3. 1.00
  4. 1.25

Answer(s): C





Which of the above patterns illustrates the effect of increasing temperature in the plethysmograph during airways resistance measurement?

  1. 4
  2. 3
  3. 2
  4. 1

Answer(s): A



The following test results are available for a 35-year-old subject who is applying for disability:



These findings are consistent with

  1. A paralyzed hemidiaphragm
  2. Occupational asthma
  3. Pulmonary fibrosis
  4. Poor effort

Answer(s): A






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