Which of the following drug is resistant to Pseudomonas?

1. Vancomycin
2. Aztreonam
3. Ciprofloxacin
4. Polymyxin B

ANSWER: Vancomycin

ref: GG 13E/P  1059

• vancomycin is resistant to Pseudomonas

remember

• glycopeptides like vancomycin are not effective for Gram negative and Pseudomonas

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