A patient who is receiving intravenous ciprofloxacin for pneumonia develops diarrhea. A stool culture is positive for Clostridium difficile. The nurse will expect the provider to:
a. add metronidazole [Flagyl].
b. increase the dose of ciprofloxacin.
c. restrict dairy products.
d. switch to gemifloxacin.
A
C. difficile is resistant to fluoroquinolones; metronidazole is the drug of choice to treat this infec-tion. Metronidazole is lethal only to anaerobic organisms, so the ciprofloxacin should be contin-ued to treat the pneumonia. Increasing the dose of ciprofloxacin is not indicated, because C. dif-ficile is resistant to ciprofloxacin. Gemifloxacin is approved for use in respiratory infections.
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