Table 1 Recommended antimicrobial regimens for patients with intra-abdominal infection

Single agents

Ampicillin/sulbactam

Cefotetan

Cefoxitin

Ertapenem

Imipenem/cilastatin

Meropenem

Moxifloxacin

Piperacillin/tazobactam

Ticarcillin/clavulanic acid

Combination regimens

Aminoglycoside plus an antianaerobe agent (clindamycin or metronidazole)

Aztreonam plus clindamycin

Cefuroxime plus metronidazole

Ciprofloxacin plus metronidazole

Third-or fourth-generation cephalosporin (cefepime, cefotaxime, ceftazidime, ceftizoxime, or ceftriaxone) plus an antianaerobe