Test Prep Test Prep Certifications RPFT Questions & Answers

• Question 81:

  During a bronchial provocation study, a patient has the following spirometric values after a 0.25 mg/mL dose of methacholine:

  

  Based on these results, a pulmonary function technologist should

  A. Instruct the patient to blow out longer and repeat the effort.

  B. Stop the test and immediately administer a bronchodilaior.

  C. Instruct the patient to blow out harder and repeat the effort.

  D. Reduce the concentration of methacholine on the next trial.

  Correct Answer: A

• Question 82:

  Which of the following is a valid reason for using biologic controls for DLCo?

  A. Establishing precision of the procedure

  B. Identifying the source of gas analyzer error

  C. Assessing accuracy of the volume measuring device

  D. Determining the lower limit of normal values

  Correct Answer: C

• Question 83:

  A treadmill belt stops for a fraction of a second each time the patient takes a step. A pulmonary 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.

  Correct Answer: B

• Question 84:

  Which of the following problems may be identified by using an isothermal lung analog to perform quality control on a body plethysmograph?

  1.

  Improperly calibrated mouth pressure transducer

  2.

  Obstructed or perforated pneumotachometer

  3.

  Increase in mechanical resistance

  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

  Correct Answer: C

• Question 85:

  The following values are obtained using a 3-liter calibration syringe during volume calibration of a dry-rolling spirometer:

  2.80 L

  2.79 L

  2.82 L The performance of this spirometer is best described as

  A. Neither accurate nor precise.

  B. Both accurate and precise.

  C. Precise, but not accurate.

  D. Accurate, but not precise.

  Correct Answer: D

• Question 86:

  Pulmonary function tests performed on a patient with tracheal stenosis may demonstrate increased

  A. SVC.

  B. Static compliance.

  C. Raw.

  D. FIF50.

  Correct Answer: D

• Question 87:

  During exercise, a subject's oxygen consumption increases out of proportion to his cardiac output. This is due to an increase in:

  A. Anaerobic metabolism

  B. Alveolar ventilation

  C. Coronary blood flow

  D. Oxygen extraction

  Correct Answer: C

• Question 88:

  A 35-year-old healthy male is performing a maximal stress test as part of an annual physical. The following data are observed:

  

  The patient denies any symptoms. Which of the following should a pulmonary function technologist do first?

  A. Obtain an arterial blood gas while continuing exercise

  B. Move the pulse oximeter sensor to another site

  C. Administer oxygen at 3-4 L/min by nasal cannula

  D. Terminate the test and stabilize the patient.

  Correct Answer: D

• Question 89:

  

  Which of the above patterns illustrates the effect of increasing temperature in the plethysmograph during airways resistance measurement?

  A. 4

  B. 3

  C. 2

  D. 1

  Correct Answer: A

• Question 90:

  The following data are observed during an exercise test:

  

  Which of the following should a pulmonary function technologist do?

  A. Continue the test until the patient is symptomatic.

  B. Discontinue the test and ensure patient safety.

  C. Discontinue the test after the next stage.

  D. Continue the test until the patient reaches maximal tolerance.

  Correct Answer: B