Recommendations ≥ 18 years Dosage Remarks cefazolin IV 2000 mg +metronidazole IV 500 mg Comments If the operation lasts longer than 4 hours from incision: repeat cefazolin. There is no indication for prolonged prophylaxis.
If the operation lasts longer than 4 hours from incision: repeat cefazolin. There is no indication for prolonged prophylaxis.