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Duration of antibiotics after microsurgical breast reconstruction does not change surgical infection rate

Daniel Z Liu1, Janelle A Dubbins, Otway Louie

  • 1Seattle, Wash. From the Department of Surgery, Division of Plastic Surgery, University of Washington School of Medicine.

Plastic and Reconstructive Surgery
|January 31, 2012
PubMed
Abstract

Insights

Extending postoperative antibiotic prophylaxis beyond 24 hours did not reduce surgical-site infection rates in autologous breast reconstruction patients. Current practices may not offer additional benefits for preventing infections in these procedures.

Area of Science:

  • Plastic Surgery
  • Surgical Oncology
  • Infectious Disease

Background:

  • Breast surgery infection rates (3-15%) exceed typical clean surgical procedures.
  • No consensus exists on postoperative prophylactic antibiotic use in microsurgical breast reconstruction.
  • Standard antibiotic protocols have improved outcomes in other surgical fields.

Purpose of the Study:

  • To evaluate the impact of extended postoperative antibiotic prophylaxis on surgical-site infection (SSI) rates.
  • To determine if prolonged antibiotic use (>24 hours) benefits autologous breast reconstruction outcomes.
  • To analyze risk factors associated with SSIs in this patient population.

Main Methods:

  • Retrospective review of 256 patients undergoing autologous breast reconstruction (2006-2009).
  • Analysis of risk factors: comorbidities, irradiation, chemotherapy history.
  • Comparison of SSI rates between patients receiving ≤24 hours vs. >24 hours of postoperative antibiotics, measured by CDC criteria.

Main Results:

  • Overall SSI rate was 17.2% (44/256 patients).
  • Increased age, tobacco use, and prior radiation correlated with higher SSI risk.
  • No significant difference in SSI rates between antibiotic groups (19.5% vs. 15.5%, p=0.47).

Conclusions:

  • Postoperative antibiotic prophylaxis exceeding 24 hours showed no reduction in SSI rates for autologous breast reconstruction.
  • Current evidence does not support extending antibiotic duration beyond 24 hours to prevent SSIs in this context.

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