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NEW QUESTION # 60
At maximum exercise, a 24-year-old patient's heart rate is 150/min with a VO2of 750 mUmin. The calculated 02 pulse is most consistent with which of the following?
- A. cystic fibrosis
- B. cardiomyopathy
- C. deconditioning
- D. achievement of anaerobic threshold
Answer: A
NEW QUESTION # 61
A treadmill is set so that the belt rises 1 ft in a horizontal distance of 10 ft at 3 mph. The percent grade indicator should read
- A. 3.0%
- B. 10.0%
- C. 1.0%
- D. 30.0%
Answer: A
NEW QUESTION # 62
When performing quality control in a body plethysmograph using a 5-L isothermal bottle, the VTGat shutter closure are as follows:
A pulmonary function technologist should
- A. Proceed with patient testing.
- B. Service the mouth pressure transducer.
- C. Recalibrate the box pressure transducer.
- D. Check biological control before beginning testing.
Answer: B
NEW QUESTION # 63
At the end of a progressive exercise study of a healthy adult male, RER would be approximately what value?
- A. 1.65
- B. 1.00
- C. 1.25
- D. 0.83
Answer: B
NEW QUESTION # 64
During a cardiopulmonary stress test using breath-by-breath gas analysis, a pulmonary function technologist notices that the VO2suddenly decreases. Which of the following may explain this change?
1.The patient has achieved anaerobic threshold.
2.The measurement of the expired gas volumes is inaccurate.
3.O2analyzer "phase delay" has increased.
4. There is a leak in the tubing or mouthpiece.
- A. 2,3, and 4 only
- B. 1,2, and 3 only
- C. 1,2, and 4 only
- D. 1,3, and 4 only
Answer: D
NEW QUESTION # 65
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. Incorrect doses of methacholine were administered.
- B. The spirometer accuracy drifted during the test.
- C. The patient's effort was inconsistent.
- D. The two test results are within day-to-day variability.
Answer: B
NEW QUESTION # 66
Which of the following is the most reliable method to estimate the effectiveness of standard procedures to minimize the risk ofcross-contamination during spirometry testing in a pulmonary function laboratory?
- A. Ask technologists if they wash their hands before each test
- B. Count the number of disposable mouthpieces used for 1 week.
- C. Observe the handwashing behavior of each technologist.
- D. Ask patients tested about laboratory hygiene.
Answer: C
NEW QUESTION # 67
A subject has the following values reported:
What is the SGAW?
- A. 1.25
- B. 0.80
- C. 0.20
- D. 0.40
Answer: A
NEW QUESTION # 68
The following Levy-Jennings charts of control values are obtained:
Which of the following is the correct sequence of actions for a pulmonary function technologist to take?
1. Replace the oxygen electrode.
2. Check the temperature of the measuring chamber.
3. Run protein remover through the blood gas analyzer.
4. Replace the CO2 electrode.
- A. 1, then 4
- B. 3, then 1
- C. 4, then 2
- D. 2, then 3
Answer: B
NEW QUESTION # 69
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 FR
- B. Did not remain in the helium dilution breathing circuit long enough for equilibration.
- C. Had inadequate intrapulmonary mixing of inspired gas, resulting in an erroneous FRC.
- D. Did not perform the slow vital capacity properly, resulting in too low an FRC by helium dilution.
Answer: C
NEW QUESTION # 70
When performing exercise testing on a biologic control, the measurements obtained should be compared with
- A. At least two other biologic controls being tested.
- B. Predicted values used for the biologic control's height and weight
- C. Previous tests performed on the biologic control.
- D. The patient population that will be tested.
Answer: C
NEW QUESTION # 71
While reviewing exercise data, a pulmonary function technologist notes that the patient's anaerobic threshold occurred at 35% of the patient'sVO2MAX.This indicates the patient has
- A. given a submaximal effort
- B. ventilatory limitation
- C. cardiac limitation
- D. a normal response to exercise
Answer: C
NEW QUESTION # 72
A pulmonary function technologist is performing quality control on a nebulizer used in the 5-breath dosimeter bronchial challenge. The target output of the device is 0.09 mL, plus or minus 10%. After 10 actuations, the nebulizer output was 75 µL with a 2.0 mL initial saline dose in the nebulizer. The technologist should
- A. Clean and reevaluate this nebulizer.
- B. Open the vent before starting the bronchial challenge.
- C. Add an exhalation filter and proceed with testing patients.
- D. Accept the results and begin using the device.
Answer: D
NEW QUESTION # 73
Prior to an exercise study, a pulmonary function technologist finds that the patient's RER is 1.13. Which of the following best explains this finding?
- A. Hypoventilation
- B. Hyperventilation
- C. Protein metabolism
- D. Carbohydrate metabolism
Answer: B
NEW QUESTION # 74
The following Levy-Jennings charts of control values are obtained:
Which of the following is the correct sequence of actions for a pulmonary function technologist to take?
1. Replace the oxygen electrode.
2. Check the temperature of the measuring chamber.
3. Run protein remover through the blood gas analyzer.
4. Replace the CO2electrode.
- A. 1, then 4
- B. 3, then 1
- C. 4, then 2
- D. 2, then 3
Answer: B
NEW QUESTION # 75
During an exercise (stress) test, the minute ventilation to carbon dioxide production (Ve /VCO2) ratio is 100.
This measurement indicates
- A. A normal response
- B. Equipment malfunction
- C. Severe pulmonary hypertension
- D. Increased work of breathing
Answer: B
NEW QUESTION # 76
In a patient with neuromuscular disease, which of the following is the best way to detect airway obstruction?
- A. SGaw
- B. MIP
- C. MVV
- D. PEF
Answer: C
NEW QUESTION # 77
While performing a quality control test on an open circuit nitrogen system, the volume of a 3-liter syringe is measured as 3.9 L. Which of the following is the most probable explanation?
- A. The volume was not corrected from ATPS to BTPS.
- B. The initial O2concentration in the syringe was greater than 0.21.
- C. There was an air leak in the system.
- D. The nitrogen analyzer gain was set too low.
Answer: C
NEW QUESTION # 78
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The RPFT certification exam is challenging and requires significant preparation. Candidates are encouraged to use the NBRC’s study resources, which include practice exams, study guides, and online courses. Additionally, many candidates choose to attend review courses or study groups to help them prepare for the exam.
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