A 12-year-old patient completed an evaluation for exercise-induced asthma in the pulmonary function laboratory. The patient completed six minutes of exercise on a treadmill with a heart rate of 145 to 150/min. The following spirometry data werecollected:

A pulmonary function technologist should conclude that the exercise test is

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 pulmonary function technologist is reviewing results of a recent mechanical diffusion simulation using a 3-liter syringe. The test was conducted at a room temperature of 22°
C. The following BTPS results were reported:

Which of the following should the technologist do?

At the end of a progressive exercise study of a healthy adult male, RER would be approximately what value?

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?