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Differential Correlation Between Rates of Antimicrobial Drug Consumption and Prevalence of Antimicrobial Resistance in a Tertiary Care Hospital in Greece
Elias Iosifidis MD, Charalampos Antachopoulos MDPhD, Maria Tsivitanidou MD, Aspasia Katragkou MD, Evagelia Farmaki MDPhD, Maria Tsiakou MD, Theano Kyriazi MSc, Danai Sofianou MDPhD and Emmanuel Roilides MDPhD
Infection Control and Hospital Epidemiology
Vol. 29, No. 7 (July 2008), pp. 615-622
Published by: Cambridge University Press on behalf of The Society for Healthcare Epidemiology of America
Stable URL: http://www.jstor.org/stable/10.1086/589333
Page Count: 8
You can always find the topics here!Topics: Antimicrobials, Intensive care units, Carbapenems, Antibiotic resistance, Cephalosporins, Aminoglycosides, Glycopeptides, Pathogens, Fluoroquinolones, Transplantation
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Objective. To investigate whether there is a correlation between the rates of antimicrobial drug consumption in hospital departments and the prevalence of antimicrobial resistance among clinically important bacteria recovered in the hospital. Design. Retrospective study. Setting. Tertiary care hospital in Greece. Methods. Data on antimicrobial consumption (from January 2001 through December 2004) were expressed as defined daily doses per 100 bed-days. The prevalence of antimicrobial resistance among isolates of Escherichia coli, Klebsiella pneumoniae, Pseudomonas aeruginosa, Acinetobacter baumannii, and Enterococcus faecium recovered during the same time period were calculated by the microbiology department. We then performed the following analyses: (1) a comparison of the consumption rates for different antimicrobial groups in individual hospital departments, (2) a comparison of the prevalence of resistance to different antimicrobials, and (3) a correlation analysis of antimicrobial consumption rates and the prevalence of antimicrobial resistance. Results. The rates of antimicrobial consumption and the prevalence of resistance varied substantially among the hospital's departments. The annual rate of consumption for carbapenems correlated with the rate of consumption for glycopeptides and third-generation cephalosporins (P < .05). Among P. aeruginosa isolates, the prevalence of imipenem resistance correlated with the prevalence of resistance to amikacin, ciprofloxacin, and ceftazidime (P < .05). The rate of carbapenem consumption correlated with the prevalence of imipenem resistance among P. aeruginosa and A. baumannii isolates (P < .05). The rate of aminoglycoside consumption correlated with the prevalence of amikacin resistance among P. aeruginosa, K. pneumoniae, and E. coli isolates (P < .05). However, the rate of consumption for fluoroquinolones and glycopeptides had no correlation with the prevalence of ciprofloxacin resistance among gram-negative bacteria or vancomycin resistance among E. faecium isolates. Conclusions. These data are suggestive of a differential relationship between antimicrobial consumption and the prevalence of antimicrobial resistance among various species and for various antimicrobial agents. These findings may help to optimize antimicrobial prescription policies in the hospital, especially in departments that have both high rates of antimicrobial consumption and a high prevalence of antimicrobial resistance.
© 2008 by The Society for Healthcare Epidemiology of America. All rights reserved.