RPFT

RPFT practice questions, page 3 of 5, with answer review and explanations.

Question 11

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

  1. Steady state
  2. Peak exercise
  3. The anaerobic threshold
  4. Rest

Question 12

A 66-year-old female performs spirometry with the following results: The patient most likely has -

  1. Normal pulmonary function.
  2. Obstructive lung disease.
  3. Restrictive lung disease.
  4. Pulmonary hypertension.

Question 13

During a linearity check of a flow sensor in a plethysmograph with a 3-liter calibration syringe, a pulmonary function technologist observes the following: Which of the following should the technologist do?

  1. Perform an additional flow check at 10 L/sec.
  2. Look for an obstruction in the flow sensor.
  3. Record these results and begin testing.
  4. Recalibrate and repeat the linearity check.

Question 14

A patient will undergo bronchial provocation testing with methacholine chloride (Provocholine). Baseline spirometry reveals the FVC is 4.00 L and FEV1 is 3.00 L. The provocative dose 20% (PD20) can be calculated when which of the following measurements occur?

  1. The FVC falls below 3.20 L, or the FEV1 falls below 2.40 L.
  2. The FEV, falls below 2.40 L, regardless of change in FVC.
  3. The FVC falls below 3.20 L and the FEV1 falls below 2.40 L.
  4. The ratio FEV1/FVC falls below 0.8.

Question 15

Successive peak flow measurements made with a peak flowmeter on a subject previously diagnosed as having asthma yield the following results: Which of the following is the best explanation for these?

  1. Condensation of moisture in the peak flowmeter
  2. Normal response
  3. Improper calibration of the peak flowmeter
  4. Increasing airways resistance in the subject