Risk Factors for Carbapenem-Resistant Klebsiella pneumoniae Infection: A Meta-Analysis.

Area of Science:

• Infectious Diseases
• Clinical Microbiology
• Epidemiology

Background:

• Carbapenem-resistant Klebsiella pneumoniae (CRKP) infections are a significant and increasing cause of nosocomial disease globally.
• Previous studies on CRKP infection risk factors have yielded inconsistent results, necessitating a comprehensive analysis.

Purpose of the Study:

• To conduct a meta-analysis to identify and consolidate the risk factors associated with CRKP infection.
• To provide evidence-based insights for developing effective CRKP infection prevention strategies.

Main Methods:

• A systematic literature search was performed across five electronic databases up to September 2016.
• Odds ratios (ORs) and 95% confidence intervals were calculated to assess the significance of identified risk factors.
• A Z-test was employed to determine the statistical significance of pooled odds ratios.

Main Results:

• Sixteen studies involving 3,627 participants were included in the meta-analysis.
• Key risk factors identified include longer length of hospital stay (LOS), intensive care unit (ICU) admission, prior hospitalization, transplant recipient status, steroid use, central venous catheter use, mechanical ventilation, tracheostomy, parenteral nutrition, and previous antibiotic use.
• Specific antibiotic exposures associated with increased risk include carbapenems, aminoglycosides, glycopeptides, quinolones, and anti-pseudomonal penicillins.

Conclusions:

• The meta-analysis confirmed 16 significant risk factors for CRKP infection, highlighting the importance of factors like extended LOS, ICU stays, previous antibiotic use, and carbapenem exposure.
• Identifying and addressing these modifiable risk factors is essential for the successful prevention and control of CRKP infections in healthcare settings.