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Postoperative Staphylococcus aureus Infections in Patients With and Without Preoperative Colonization.

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This summary is machine-generated.

Preoperative Staphylococcus aureus (S. aureus) colonization significantly increases the risk of developing S. aureus surgical site infections (SSIs) and bloodstream infections (BSIs) post-surgery. Addressing both modifiable and nonmodifiable factors is crucial for prevention in high-risk patients.

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Area of Science:

  • Infectious Diseases
  • Clinical Microbiology
  • Epidemiology

Background:

  • Staphylococcus aureus surgical site infections (SSIs) and bloodstream infections (BSIs) are significant postoperative complications with suboptimal prevention strategies.
  • There is a need for current data on the incidence and etiological factors of S. aureus SSIs and BSIs to improve prevention.

Purpose of the Study:

  • To determine the occurrence of postoperative S. aureus SSIs and BSIs.
  • To quantify the association between S. aureus infections and patient-related or contextual factors.

Main Methods:

  • A multicenter cohort study involving 5004 surgical patients across 10 European countries.
  • Patients were screened for S. aureus colonization preoperatively and followed for up to 90 days post-surgery.
  • Weighted incidence and multivariable Cox proportional hazards regression models were used for data analysis.

Main Results:

  • The weighted cumulative incidence of S. aureus SSIs or BSIs was 2.55% for carriers and 0.52% for noncarriers.
  • Preoperative S. aureus colonization was strongly associated with an increased risk (AHR, 4.38).
  • Other associated factors included nonremovable implants, mastectomy, neurosurgery, and higher body mass index.

Conclusions:

  • Preoperative S. aureus carriage is a significant risk factor for developing SSIs and BSIs.
  • Both modifiable and nonmodifiable factors contribute to the risk of S. aureus infections.
  • These findings highlight the need to address identified risk factors for improved prevention strategies.