“…The least expensive, most commonly available agents meeting these criteria are second‐generation cephalosporins (e.g., cefoxitin), which have been shown to be effective in a number of studies [77, 78, 79, 80, 81, 82, 83, 84]. Other appropriate choices include a β ‐lactam penicillin [85, 86, 87, 88] or dual therapy with an aminoglycoside or aztreonam and a specific anaerobic agent such as clindamycin or metronidazole [80, 83, 87, 88, 89, 90, 91, 92, 93, 94]. Use of newer broad‐ spectrum agents such as imipenem cilastin or “triple” antibiotics is not necessary for coverage of normal colon flora, nor is the use of these agents likely to be cost‐effective.…”