Test Prep RPFT Online Practice Questions and Exam Preparation

Test Prep RPFT Online Questions & Answers

• Question 31:

  The following results are obtained from an adult patient:

  

  Which of the following is the best interpretation of these values?

  A. Small airway disease
  B. Normal values
  C. Combined obstruction/restriction
  D. Airways obstruction
  A. Small airway disease

• Question 32:

  The following results are obtained from an adult male:

  

  The corrected DLco value

  A. is unchanged.
  B. is higher.
  C. is lower.
  D. cannot be calculated.
  A. is unchanged.

• Question 33:

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

• Question 34:

  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?

  A. The sample chamber temperature is greater than 37?C
  B. An excessive delay occurred between running the two samples
  C. The PO2 and PCO2 electrode membranes have protein build-up
  D. The sample chamber has a bacterial contaminate
  A. The sample chamber temperature is greater than 37?C

• Question 35:

  A patient with severe airflow limitation pants too rapidly (> 3 breaths/second) against a closed shutter in a body plethysmograph. Which of the following will occur?

  A. VTG underestimation
  B. VTG overestimation
  C. RAW underestimation
  D. RAW overestimation
  D. RAW overestimation

• Question 36:

  A 54-year-old male who smokes presents to the pulmonary laboratory for chronic cough and dyspnea on exertion. PFT and blood gas results show the following:

  

  Which of the following should the pulmonary function technologist recommend?

  A. DLco measurement
  B. Oxygen therapy with exercise
  C. Trial of varenicline (Chantix)
  D. Lung volume measurement
  A. DLco measurement

• Question 37:

  Which of the following may cause a reduction in end-tidal CO2?

  A. Increased VD/VT ratio
  B. Anxiety-induced hyperventilation
  C. Exercise below the anaerobic threshold
  D. Eating a high-protein diet
  B. Anxiety-induced hyperventilation

• Question 38:

  A pulmonary function technologist is performing an exercise (stress) test on a patient with severe COPD. As the test progresses, the patient shows signs of increasing dyspnea. Measurements of inspiratory capacity decreased from 2.0 L to

  1.5 L. Which of the following most likely occurred?

  A. dynamic hyperinflation
  B. disconnected gas sampling line
  C. drift in the flow transducer
  D. acute decrease in FRC
  D. acute decrease in FRC

• Question 39:

  While reviewing exercise data, a pulmonary function technologist notes that the patient's anaerobic threshold occurred at 35% of the patient's VO2MAX. This indicates the patient has

  A. ventilatory limitation
  B. cardiac limitation
  C. a normal response to exercise
  D. given a submaximal effort
  B. cardiac limitation

• Question 40:

  During a cardiopulmonary stress test using breath-by-breath gas analysis, a pulmonary function technologist notices that the VO2 suddenly 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.

  O2 analyzer "phase delay" has increased.

  4.

  There is a leak in the tubing or mouthpiece.

  A. 1, 3, and 4 only
  B. 1, 2, and 3 only
  C. 1, 2, and 4 only
  D. 2, 3, and 4 only
  A. 1, 3, and 4 only