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NBRC RPFT Exam Syllabus Topics:

NBRC Registry Examination for Advanced Pulmonary Function Technologists Sample Questions:

1. A patient will undergo bronchial provocation testing with methacholine chloride (Provocholine). Baseline spirometry reveals the FVC is 4.00 L and FEV1is 3.00 L. The provocative dose 20% (PD20) can be calculated when which of the following measurements occur?

A) The FVC falls below 3.20 L and the FEV1falls below 2.40 L.
B) The ratio FEV1/FVC falls below 0.8.
C) The FEV, falls below 2.40 L, regardless of change in FVC.
D) The FVC falls below 3.20 L, or the FEV1falls below 2.40 L.

2. To facilitate measurement of arterial oxygen content during an exercise (stress) test, a pulmonary function technologist should recommend

A) An arterial puncture at anaerobic threshold
B) End-tidal monitoring
C) Radial artery catheterization
D) Pulse oximetry

3. 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 has a bacterial contaminate
B) The PO2and PCO2electrode membranes have protein build-up
C) The sample chamber temperature is greater than 37° C
D) An excessive delay occurred between running the two samples

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

A) 1.25
B) 0.83
C) 1.65
D) 1.00

5. 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) Did not remain in the helium dilution breathing circuit long enough for equilibration.
B) Was turned into the helium dilution circuit at a lung volume considerably above FRC.
C) Did not perform the slow vital capacity properly, resulting in too low an FRC by helium dilution.
D) Had inadequate intrapulmonary mixing of inspired gas, resulting in an erroneous FRC.

Solutions: