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OBJECTIVE: To study the clinical and molecular epidemiology of vancomycin-resistant Enterococcus faecium organisms causing catheter-related bacteremia in patients with cancer. DESIGN: Retrospective case-control study. SETTING: University of Texas M. D. Anderson Cancer Center, a tertiary-care hospital in Houston, Texas. PATIENTS: Case-patients were patients with cancer who had catheter-related vancomycin-resistant E. faecium bacteremia and control-patients were patients with cancer and vancomycin-resistant E. faecium gastrointestinal colonization without infection. RESULTS: Ten case-patients with catheter-related vancomycin-resistant E. faecium bacteremia were compared with 30 control-patients with gastrointestinal colonization by vancomycin-resistant E. faecium. Patients with catheter-related vancomycin-resistant E. faecium bacteremia were more likely to have required mechanical ventilation (P < .01), received total parenteral nutrition (P < .01), and had polyurethane catheters (P < .01) inserted in the femoral vein (P = .01). With the use of pulsed-field gel electrophoresis, 4 of the 10 catheter-related vancomycin-resistant E. faecium bacteremia isolates were genetically indistinguishable, whereas only 2 of the 30 control vancomycin-resistant E. faecium isolates displayed this same DNA pattern (P = .03). CONCLUSION: This study suggests that catheter-related vancomycin-resistant E. faecium bacteremia occurs more frequently in patients who receive total parenteral nutrition, mechanical ventilation, and femoral catheters.
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Raad et al. (2005) studied this question.
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