Cefoperazone works as a bactericide by reducing bacterial cell wall production, while sulbactam works as a beta-lactamase inhibitor to boost Cefoperazone's antibacterial effectiveness against beta-lactamase-producing bacteria.
Sulbactam should improve Cefoperazone's antibacterial range and clinical efficacy against nosocomial and other infections such as plasmid-containing intestinal bacteria, Bacteroides species, and Acinetobacter species.