is started on cefepime and vancomycin for pneumonia. Sputum cultures return with pan-susceptible Pseudomonas aeruginosa. Can ciprofloxacin be used?
Yes
Explanation: Ciprofloxacin is not a respiratory fluoroquinolone because it does not have reliable activity against Streptococcus pneumoniae. However, it i can still be used for pneumonia caused by other organisms for which it has activity. For example, ciprofloxacin is a recommended second agent in empiric combination regimens against Pseudomonas aeruginosa in the IDSA HAP/VAP guidelines.