The effect of cefoperazone sulbactam and piperacillin tazobactam on mortality in Gram-negative nosocomial infections.

Cefoperazone-sulbactam (CS) and piperacillin-tazobactam (TZP) are used in the treatment of Gram-negative nosocomial infections (NIs). We aimed to compare the effects of these two antibiotics on mortality and treatment success. Patients treated with CS or TZP empirically for at least three days with suspicion of NI were included in this retrospective study. In total, 308 (154 patients in both treatment arms) patients were analyzed. Treatment success rate in CS and TZP group respectively (50% vs 51.2%, p = 0.18), 28-day mortality rate (46.1% vs 42.8%, p = 0.56) and antibiotic-related side effects (50.6% vs 46.1%, p = 0.42) were similar except prolonged prothrombin time (19.4% vs 6.4%; p = 0.001). According to this study results, CS and TZP have equal effectivity and safety for the empirical treatment of Gram-negative NIs. CS may be an appropriate alternative to TZP for antibiotic cycling or mixing strategy to reduce antibiotic resistance.