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NBRC RPFT Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Patient Preparation and Assessment | 25% | - Patient Interview and History
|
| Body Plethysmography | 10% | - Lung Volume Measurement
|
| Equipment Operation and Calibration | 30% | - Infection Control
|
| Spirometry | 15% | - Pre-test Procedures
|
| Diffusion Capacity (DLCO) | 10% | - Test Performance
|
| Respiratory Muscle Strength | 5% | - MIP and MEP Measurements
|
| Data Quality, Analysis, and Reporting | 5% | - Quality Control
|
NBRC Registry Examination for Advanced Pulmonary Function Technologists Sample Questions:
1. The following data were obtained from a bronchial challenge test:
APC20of 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) The spirometer accuracy drifted during the test.
C) Incorrect doses of methacholine were administered.
D) The patient's effort was inconsistent.
2. A helium dilution test has just been performed on a patient. The following results are obtained:
FRC 5.0 L
VC 4.0 L
ERV 1.5 L
TLC was calculated to be 6.0 L by plethysmography. From this information, a pulmonary function technologist should conclude that the patient
A) Had inadequate intrapulmonary mixing of inspired gas, resulting in an erroneous FRC.
B) Did not remain in the helium dilution breathing circuit long enough for equilibration.
C) Did not perform the slow vital capacity properly, resulting in too low an FRC by helium dilution.
D) Was turned into the helium dilution circuit at a lung volume considerably above FRC.
3. 
Which of the above patterns illustrates the effect of increasing temperature in the plethysmograph during airways resistance measurement?
A) 4
B) 2
C) 1
D) 3
4. A pulmonary function technologist is performing an exercise (stress) test on a patient with severe COPD. As the test progresses, the patient shows signs of increasing dyspnea. Measurements of inspiratory capacity decreased from 2.0 L to 1.5 L. Which of the following most likely occurred?
A) acute decrease in FRC
B) disconnected gas sampling line
C) drift in the flow transducer
D) dynamic hyperinflation
5. Which of the following may cause a reduction in end-tidal CO2?
A) Exercise below the anaerobic threshold
B) Eating a high-protein diet
C) Increased VD/VTratio
D) Anxiety-induced hyperventilation
Solutions:
| Question # 1 Answer: B | Question # 2 Answer: A | Question # 3 Answer: A | Question # 4 Answer: A | Question # 5 Answer: D |
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