Question No 36:
Which of the following is the most reliable method to estimate the effectiveness of standard procedures to minimize the risk of cross-contamination during spirometry testing in a pulmonary function laboratory?
A. Count the number of disposable mouthpieces used for 1 week.
B. Observe the handwashing behavior of each technologist.
C. Ask patients tested about laboratory hygiene.
D. Ask technologists if they wash their hands before each test
Answer: B
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