In vitro synergy testing of levofloxacin, ofloxacin, and ciprofloxacin in combination with aztreonam, ceftazidime, or piperacillin against Pseudomonas aeruginosa
Abstract
The synergistic potential of levofloxacin, ofloxacin and ciprofloxacin combined with aztreonam, ceftazidime, or piperacillin was compared using 24 strains of Pseudomonas aeruginosa with varying susceptibility profiles. Levofloxacin and ciprofloxacin demonstrated similar in vitro activity, with ofloxacin demonstrating less activity compared to the other agents. Predominantly additive effects were seen with all combinations, with no significant differences detected between the fluoroquinolone agents.
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