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Meropenem as predictive risk factor for isolation of multidrug-resistant Pseudomonas aeruginosa

A Nakamura1, K Miyake, S Misawa

  • 1Department of Clinical Laboratory, Juntendo University Hospital, Tokyo, Japan.

The Journal of Hospital Infection
|December 4, 2012
PubMed

Insights

Multidrug-resistant Pseudomonas aeruginosa infections are linked to prolonged hospital stays and specific antibiotic exposures. Diabetes and surgery also increase the risk of acquiring these resistant bacterial infections.

Area of Science:

  • Medical Microbiology
  • Infectious Diseases
  • Hospital Epidemiology

Background:

  • Pseudomonas aeruginosa is an opportunistic pathogen.
  • Multidrug-resistant (MDR) strains pose a significant clinical challenge.
  • Understanding risk factors is crucial for infection control.

Purpose of the Study:

  • To identify independent risk factors for MDR P. aeruginosa isolation.
  • To analyze data from a Japanese university hospital over a 14-year period.

Main Methods:

  • Retrospective analysis of patient data from January 1997 to December 2010.
  • Definition of MDR P. aeruginosa: resistance or intermediate susceptibility to five tested antimicrobials.
  • Multivariate logistic regression analysis to determine predictive factors.

Main Results:

  • 159 cases of MDR P. aeruginosa were identified.
  • Prolonged hospital stay was a significant risk factor.
  • Prior exposure to meropenem and fluoroquinolones increased risk.
  • Diabetes mellitus and recent surgery were also predictive.

Conclusions:

  • Prolonged hospitalization, specific antibiotic use (meropenem, fluoroquinolones), diabetes, and surgery are key risk factors for MDR P. aeruginosa.
  • These findings can inform targeted prevention strategies.
  • Hospital-acquired infections with MDR pathogens require ongoing surveillance.

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