Free NBRC RPFT Exam Dumps Questions & Answers

The following results were obtained from spirometry before and after a bronchodilator administration:

Which of the following is the correct interpretation of these data?

• A.Obstructive pattern with positive bronchodilator response
• B.Restrictive pattern with positive bronchodilator response
• C.Restrictive pattern with no bronchodilator response
• D.Obstructive pattern with no bronchodilator response

A patient is performing a flow-volume loop. A pulmonary function technologist observes equal decreases in expiratory and inspiratory flows resulting in plateaus. Patient effort is satisfactory, and he follows instructions well. The technologist should expect the patient to have a

• A.Restrictive disorder
• B.Fixed large airways obstruction.
• C.Variable large airways obstruction
• D.Small airways obstruction

Which of the following is the most reliable indicator that a patient has achieved his maximum exercise capacity during a progressive exercise (stress) test?

• A.Minute ventilation greater than 170 L/min
• B.VO2remains stable with increasing workload
• C.Heart rate of 210/min
• D.Respiratory exchange ratio greater than 0.8

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

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

While setting up an exercise laboratory in a city with an altitude of 8,600 ft (2,775 m), a pulmonary function technologist notices the fuel cell O2analyzer is displaying 15.2%. Which of the following is the best explanation for this finding?

• A.The analyzer is responding to P1O2.
• B.The fuel cell needs to be changed.
• C.F1O2decreases with increasing altitude.
• D.This exercise system will not work at high altitude.