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Prolongation of antibiotic prophylaxis after clean and clean-contaminated surgery and surgical site infection

S De Chiara1, D Chiumello, R Nicolini

  • 1Department of General Resuscitation, Institute of Anesthesia and Resuscitation University of Milan, Fondazione IRCCS, Ospedale Maggiore Policlinico, Mangiagalli and Regina Elena, Milan, Italy. sergiodechiara@policlinico.mi.it

Minerva Anestesiologica
|May 18, 2010
PubMed
Abstract

Insights

Prolonging antibiotic prophylaxis (AMP) beyond 24 hours after surgery increases the risk of surgical site infections (SSIs). Current guidelines recommend limiting AMP to premedication, but prolonged use is common and should be avoided to prevent SSIs.

Area of Science:

  • Infectious Diseases
  • Surgical Outcomes
  • Pharmacology

Background:

  • Guidelines recommend antibiotic prophylaxis (AMP) primarily for premedication.
  • Clinical practice often involves unnecessary prolongation of AMP post-surgery.
  • This study investigates the impact of prolonged AMP on surgical site infections (SSIs).

Purpose of the Study:

  • To evaluate the risk of SSIs associated with prolonged AMP after clean and clean-contaminated surgery.
  • To determine if prolonged AMP, with or without risk factors, affects SSI rates.
  • To provide evidence-based recommendations on AMP duration in surgical procedures.

Main Methods:

  • Observational study including 358 patients undergoing surgery.
  • AMP administered pre-incision; 24-hour prolongation allowed only for patients with risk factors (ASA score >2 or long procedure).
  • Surgical site infections (SSIs) monitored during hospitalization and post-discharge.

Main Results:

  • No reduction in intra-hospital SSIs observed with 24-hour AMP prolongation in patients with risk factors.
  • Prolonged AMP (over 24 hours) significantly increased intra-hospital and post-discharge SSI risk, irrespective of risk factors.
  • AMP prolongation beyond 24 hours showed an odds ratio of 3.39 for intra-hospital SSIs and 5.39 for post-discharge SSIs.

Conclusions:

  • Postoperative antibiotic prophylaxis prolongation should be avoided.
  • Prolonged AMP increases the risk of surgical site infections.
  • Adherence to guidelines recommending limited AMP duration is crucial for patient safety.

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