Figure 2

Antibiotic regimens administered to patients who received combination therapy for the first-line treatment of complicated intra-abdominal infections. Cephalosporins included: cefazolin, ceftizoxime, cefotaxime, and ceftriaxone; fluoroquinolones included: ciprofloxacin and levofloxacin; carbapenems included imipenem and meropenem; aminoglycosides included: amikacin, gentamicin and tobramycin. Other regimens included: aminoglycosides plus ampicillin/sulbactam or piperacillin/tazobactam, or imipenem (n = 4), fluoroquinolones plus amoxicillin/clavulanate, cephalosporins, tygecicline or piperacillin/tazobactam (n = 5), fluoroquinolones plus clindamycin (n = 1).