Spectrum: Local Antimicrobial Stewardship, for IWK Health Centre

Not perforated

Most likely pathogens

Duration of therapy

Single pre-op dose only

Suggested regimen

Metronidazole 15 mg/kg/dose x 1 dose
Maximum: 500 mg/dose

AND

Gentamicin 5 mg/kg/dose x 1 dose
Maximum: 360 mg/dose

OR

Cefoxitin 30 mg/kg/dose x 1 dose
Maximum: 2 grams/dose

Penicillin allergy

Metronidazole 15 mg/kg/dose x 1 dose
Maximum: 500 mg/dose

AND

Gentamicin 5 mg/kg/dose x 1 dose
Maximum: 360 mg/dose