Tracheal airways increase the incidence of pulmonary infections for which of the following rea-sons?
1. Lower levels of humidification
2. Increased aspiration of pharyngeal material
3. Contaminated equipment or solutions
4. Ineffective clearance through cough
a. 1 and 3 only
b. 1, 2, and 3 only
c. 3 and 4 only
d. 2, 3, and 4 only
ANS: D
As indicated in Box 36-7, there are several reasons why tracheal tubes increase the incidence of pulmonary infection.
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