You Perform a Series of Pulmonary Function Tests on a Patient

Multiple Choice

You perform a series of pulmonary function tests on a patient with a potentially infectious disease carried via the airborne route. Which of the following infection-control procedures should you implement?
I. Wear a respirator or close-fitting surgical mask.
II. Dispose of, sterilize, or disinfect the tubing circuit after testing.
III. Clean the interior surface of the spirometer before the next test.

A) I
B) I and II
C) II and III
D) I, II, and III