An unconscious patient aspirated gastric contents. Which of the following anaerobic microorganisms would likely now be found in her lower respiratory tract?

1. Legionella pneumophila
2. Pseudomonas aeruginosa
3. Peptococci
4. Bacteroides fragilis
a. 1, 3
b. 3, 4
c. 1, 3, 4
d. 1, 2, 3, 4


B
Peptococci and B. fragilis are anaerobic microorganisms and may be present in the lower respiratory tract following aspiration.

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