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Reducing infection rates after prostate biopsy.

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Rising febrile infections after transrectal prostate biopsy are linked to fluoroquinolone-resistant bacteria. Targeted antibiotic prophylaxis based on rectal flora swabbing shows promise in reducing these infections, unlike current empirical methods.

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Area of Science:

  • Urology
  • Infectious Diseases
  • Oncology

Background:

  • Transrectal prostate biopsy is the standard for diagnosing prostate cancer, with millions performed annually.
  • Preoperative fluoroquinolone prophylaxis typically reduces infection rates, but recent studies show a rise in febrile infections post-biopsy (1% to 4%).
  • Fluoroquinolone-resistant bacteria in fecal matter is a primary risk factor for these increased infections.

Purpose of the Study:

  • To address the increasing rates of febrile infections following transrectal prostate biopsy.
  • To evaluate strategies for optimizing antibiotic prophylaxis in patients undergoing prostate biopsy, particularly those at risk for fluoroquinolone resistance.

Main Methods:

  • Review of retrospective and prospective studies on infection rates after transrectal prostate biopsy.
  • Investigation of risk factors, focusing on fluoroquinolone-resistant bacteria.
  • Comparison of targeted antibiotic prophylaxis (based on rectal flora swabbing) versus empirical prophylaxis.
  • Evaluation of alternative biopsy approaches (e.g., perineal biopsy) and bowel preparation methods.

Main Results:

  • Fluoroquinolone-resistant bacteria in faeces are identified as the predominant risk factor for post-biopsy infections.
  • Targeted prophylaxis, guided by rectal flora swabbing, demonstrated efficacy in reducing infection rates compared to empirical antibiotic use.
  • Current bowel preparation methods have not significantly reduced infection rates; perineal biopsy shows limited supporting data.

Conclusions:

  • Careful selection of antibiotics at adequate concentrations is crucial for patients at risk of fluoroquinolone resistance.
  • Targeted antibiotic prophylaxis is a more effective strategy than empirical prophylaxis for reducing febrile infections after transrectal prostate biopsy.
  • Further research is needed to validate alternative biopsy techniques and bowel preparations to mitigate infection risks.