[Q27-Q43] Free RPFT Questions for NBRC RPFT Exam [May-2026]

QUESTION 27
A physician orders smoking cessation counseling for a 60-year-old male with a new diagnosis of CHF and COPD. The patient has failed several attempts to quit smoking using nicotine gum. Which of the following should a pulmonary function technologist recommend?

QUESTION 28
Biological control data are obtained for lung volumes by plethysmography. The following results are obtained:

A pulmonary function technologist should repeat the test instructing the individual to

QUESTION 29
A subject has the following values reported:

What is the SGAW?

QUESTION 30
Which of the following information reported from a recent methacholine challenge test best summarizes the patient’s bronchial hyperresponsiveness?

QUESTION 31
A 45-year-old female with sarcoidosis has pulmonary function tests annually. The following data have been recorded:

A pulmonary function technologist should conclude that

QUESTION 32
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

QUESTION 33
During an exercise study, the RER will equal the RQ only when the patient is at

QUESTION 34
Biological control data are obtained for lung volumes by plethysmography. The following results are obtained:

A pulmonary function technologist should repeat the test instructing the individual to

QUESTION 35
While performing duplicate blood gas analyses, a pulmonary function technologist notes that the second instrument gives consistently higher values for PaCO2 and PaO2. Which of the following is the most probable cause of higher readings from the second instrument?

QUESTION 36
The following results are obtained:

The RV/TLC ratio from these data is consistent with which of the following?

QUESTION 37
The following results are obtained from an adult male:

The corrected DLcovalue

QUESTION 38
Which of the following sets of FIF data is most consistent with an extrathoracic airway obstruction?

QUESTION 39
A pulmonary function technologist is reviewing results of a recent mechanical diffusion simul-ation using a 3- liter syringe. The test was conducted at a room temperature of 22° C. The following BTPS results were reported:
Which of the following should the technologist do?

QUESTION 40
Which of the following is a suitable policy for following Standard Precautions in a pulmonary function laboratory?

QUESTION 41
A biologic control subject has a FRCpleth of 4.0 ±0.3 L at panting frequencies between 60 and 70/min. During a QC run, the subject pants at 55/min and a FRCpleth of 3.90 L is recorded.
Which of the following is the most appropriate action to take?

QUESTION 42
A pulmonary function technologist is performing a single-breath diffusion capacity (DLCO) test. Which of the following factors is most likely to cause a falsely elevated DLCO result?

QUESTION 43
In a patient with neuromuscular disease, which of the following is the best way to detect airway obstruction?