Try NBRC : RPFT valid & accurate questions and answers
Updated: Aug 17, 2026
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NBRC RPFT Exam Overview:
| Certification Vendor: | NBRC |
| Exam Name: | Registry Examination for Advanced Pulmonary Function Technologists |
| Exam Number: | RPFT |
| Related Certifications: | CPFT RRT |
| Certificate Validity Period: | 10 years |
| Passing Score: | Scaled score of 90 |
| Exam Format: | Multiple Choice |
| Exam Price: | USD $200 |
| Real Exam Qty: | 160 |
| Available Languages: | English |
| Exam Duration: | 180 minutes |
| Sample Questions: | NBRC RPFT Sample Questions |
| Exam Way: | Computer-based testing at PSI test centers |
| Pre Condition: | Applicants must hold the CPFT credential. |
| Official Syllabus URL: | https://www.nbrc.org/exams/rpft/ |
NBRC RPFT Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Spirometry | 15% | - Measurement and Calculation
|
| Equipment Operation and Calibration | 30% | - Calibration Procedures
|
| Respiratory Muscle Strength | 5% | - MIP and MEP Measurements
|
| Patient Preparation and Assessment | 25% | - Physical Assessment
|
| Data Quality, Analysis, and Reporting | 5% | - Reporting
|
| Diffusion Capacity (DLCO) | 10% | - Test Performance
|
| Body Plethysmography | 10% | - Lung Volume Measurement
|
NBRC Registry Examination for Advanced Pulmonary Function Technologists Sample Questions:
1. 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) Was turned into the helium dilution circuit at a lung volume considerably above FRC.
B) Did not perform the slow vital capacity properly, resulting in too low an FRC by helium dilution.
C) Had inadequate intrapulmonary mixing of inspired gas, resulting in an erroneous FRC.
D) Did not remain in the helium dilution breathing circuit long enough for equilibration.
2. 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.
3. During an exercise (stress) test, the minute ventilation to carbon dioxide production (Ve /VCO2) ratio is 100.
This measurement indicates
A) Severe pulmonary hypertension
B) Increased work of breathing
C) A normal response
D) Equipment malfunction
4. A biologic control subject has a FRCplethof 4.0 ±0.3 L at panting frequencies between 60 and 70/min. During a QC run, the subject pants at55/min and a FRCplethof 3.90 L is recorded.
Which of the following is the most appropriate action to take?
A) Continue using the system because it is within control limits.
B) Take the plethysmograph out of service pending corrective maintenance.
C) Recalibrate the mouth pressure transducer and repeat the test.
D) Repeat the test, coaching the subject to pant more slowly.
5. Which of the following information reported from a recent methacholine challenge test best summarizes the patient's bronchial hyperresponsiveness?
A) diluent FEV1= 92% predicted
B) postbronchodilator recovery FEV1= 106% baseline
C) PC20= 2.3 mg/mL
D) patient reported chest tightness and a cough
Solutions:
| Question # 1 Answer: C | Question # 2 Answer: D | Question # 3 Answer: D | Question # 4 Answer: A | Question # 5 Answer: D |
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