Pharm

Cefoxitin

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Cefoxitin, Mefoxin

  • Indications
  1. Abdominal Surgery prophylaxis
  2. Colorectal surgery prophylaxis
  • Mechanism
  1. Antibiotics in this group are Cephamycin derivatives
  2. Antibiotic coverage spectrum
    1. Gram Positive activity (but less than Second Generation Broad-spectrum Cephalosporins such as Cefuroxime)
    2. Gram Negative coverage
    3. Anaerobic coverage (e.g. Bacteroides)
  • Dosing
  • Adult
  1. Typical Dose
    1. Give 1 to 2 g IV every 6 to 8 hours
  2. High Dose (Severe Infections)
    1. Give 3 g IV every 6 hours
  3. Surgical Prophylaxis
    1. Give 2 g IV 30 to 60 min before surgery (or for Cesarean Section, after Umbilical Cord clamped)
    2. May continue 2 g IV every 6 hours for 24 hours
  4. Renal Dosing
    1. eGFR 30 to 50 ml/min: 1 to 2 g IV every 8 to 12 hours
    2. eGFR 10 to 29 ml/min: 1 to 2 g IV every 12 to 24 hours
    3. eGFR 5 to 9 ml/min: 0.5 to 1 g IV every 12 to 24 hours
    4. eGFR <5 ml/min: Load 1 to 2 g IV, then 0.5 g IV every 24 to 48 hours
      1. Give additional 1 to 2 g IV after Hemodialysis
  • Dosing
  • Child (age >3 months)
  1. Typical Dose
    1. Give 80 to 100 mg/kg/day IV divided every 6 to 8 hours
  2. High Dose (severe infections)
    1. Give 160 mg/kg/day IV divided every 6 to 8 hours
  • Adverse Effects
  1. Lab abnormalities in children after high dose regimens
    1. Eosinophilia
    2. Aspartate Aminotransferase (AST) increased
  • Safety
  1. Pregnancy Category B
  2. Safe in Lactation
  • References
  1. (2012) Presc Lett, Resource #280706, Comparison of Cephalosporins
  2. Hamilton (2020) Tarascon Pocket Pharmacopoeia