RPFT Exam Questions

Effective June 2015, the Certification Examination for Entry-Level Pulmonary Function
Technologists (CPFT) and the Registry Examination for Advanced Pulmonary Function
Technologists
(RPFT) will transition to a one‐examination, two‐cut scores examination. If a candidate achieves
the lower cut score, they will earn the CPFT credential. If a candidate achieves the higher cut
score, they will earn the RPFT credential. The new Pulmonary Function Technologist (PFT)
Examination is designed to objectively measure essential tasks required of a pulmonary
function technologist. The PFT Examination will contain 115 multiple‐choice items (100 scored,
15 pretest) distributed among the three major content areas: instrumentation/equipment,
procedures, and data management. Candidates will be given two hours to complete the PFT
Examination.
What is RPFT?
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Question No 1:
Which of the following is the most reliable method to estimate the effectiveness of standa
rd procedures to minimize the risk of cross-contamination during spirometry testing in a p
ulmonary function laboratory?
A. Count the number of disposable mouthpieces used for 1 week.
B. Observe the handwashing behavior of each technologist.
C. Ask patients tested about laboratory hygiene.
D. Ask technologists if they wash their hands before each test
Answer: B

Question No 2:
While performing duplicate blood gas analyses, a pulmonary function technologist notes t
hat the second instrument gives consistently higher values forPaCO2and PaO2. Which of t
he following is the most probable cause of higher readings from the second instrument?
A. The sample chamber temperature is greater than 37° C
B. An excessive delay occurred between running the two samples
C. The PO2and PCO2electrodemembranes have protein build-up
D. The sample chamber has a bacterial contaminate
Answer: A

Question No 3:
Which of the following problems may be identified by using an isothermal lung analog to p
erform quality control on a body plethysmograph?
1. 1.Improperly calibrated mouth pressure transducer
2. 2.Obstructed or perforated pneumotachometer
3. 3.Increase in mechanical resistance
4. 4.Malfunctioning box pressure transducer
A. 3 and 4 only
B. 2 and 3 only
C. 1 and 4 only
D. 1 and 2 only
Answer: C

Question No 4:
An isothermal lung analog has the following specifications:
5-L glass bottle
2000 g of steel wool
Density of steel wool 5 g/cm3
Volume of connectors and bulb 100 mi-Repeated FRC measurements in the plethysmograp
h result in a volume of 5.5 L. Which of the following should a pulmonary function technolo
gist do?
A. Remove 500 g ofsteel wool from the lung analog
B. Take the plethysmograph out of service
C. Recalculate the BTPS correction
D. Begin a biologic control program
Answer: D

A pulmonary function technologist is reviewing an asthma action plan. The patient takes a low
-dose inhaled corticosteroid and a long-acting beta2-agonist twice daily. The patient's personal
best peak flow is 600 L/min. Which of the following instructions should be given to the patient
when the peak flow drops to 500 L/min?
A. Add montelukast (Singular).
B. Continue the current regimen.
C. Go to the emergency department.
D. Double the steroid dose.
Answer: A
Question No 5:

Question No 6:
A treadmill belt stops for a fraction of a second each time the patient takes a step. A pulmo
nary function technologist should
A. Instruct the patient to use the hand rails.
B. Tighten the belt.
C. Increase the speed of the belt.
D. Decrease the treadmill grade.
Answer: B

Prior to an exercise study, a pulmonary function technologist finds that the patient's RER is 1.1
3. Which of the following best explains this finding?
A. Carbohydrate metabolism
B. Protein metabolism
C. Hypoventilation
D. Hyperventilation
Answer: D
Question No 7:

A 6-year-old child has a history of repeated episodes of wheezing and shortness of breath. A p
ulmonary function technologist has difficulty obtaining repeatable spirometry results. Which o
f the following tests should be performed next?
A. MVV
B. DLco
C. SGaw
D. SpO2
Answer: A
Question No 8:

A pulmonary function technologist is performing an exercise (stress) test on a patient with sev
ere COPD. As the test progresses, the patient shows signs of increasing dyspnea. Measurement
s of inspiratory capacity decreased from 2.0 L to 1.5 L. Which of the following most likely occur
red?
A. Dynamic hyperinflation
B. Disconnected gas sampling line
C. Drift in the flow transducer
D. Acute decrease in FRC
Answer: D
Question No 9:

During exercise, a subject's oxygen consumption increases out of proportion to his cardiac out
put. This is due to an increase in
A. Anaerobic metabolism
B. Alveolar ventilation
C. Coronary blood flow
D. Oxygen extraction.
Answer: C
Question No 10:

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