While assessing a patient's expired gases at rest prior to exercise, a pulmonary function technologist calculates the RER as 0.6. Which of the following is the most likely explanation?

To assure linearity of an oxygen analyzer, calibrate with

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?

A government agency requires that a pulmonary function technologist establish procedures to minimize the loss of laboratory data. Which of the following should be included in these procedures?
1. Continuous mirroring of hard drives
2. Storage of duplicate test data offsite
3. No Internet connections to the computer storing the database
4. Contracting with a third-party security company

The following results were obtained from a symptom-limited exercise (stress) test:

Which of the following is true regarding these data?