Résumé
Objective To investigate the antimicrobial resistance of Enterococcus f aecalis and Enterococcus f aecium isolated from the First Affiliated Hospital of Chongqing Medical University between 2009 and 2012 .Methods Antimicrobial susceptibility testing was carried out according to the unified protocol .The dates were analyzed by WHONET 5 .6 software according to clinical and laboratory standards institute(CLSI) of 2012 .Results A total of 783 non-repetitive Enterococcus f aecalis and 664 non-repeti-tive Enterococcus f aecium isolates were collected .The strains were still highly susceptible to linezolid and vancomycin .The resist-ance rates were all less than 2 .0% .The resistance rates of vancomycin to Enterococcus f aecalis and Enterococcus f aecium were 0 .1% and 1 .4% ,respectively .The percentage of Enterococcus f aecalis resistant to ampicillin ,penicilin and nitrofurantoin were 5 .7% ,2 .6% and 2 .2% ,respectively .About 32 .9% of Enterococcus f aecalis isolates were resistant to gentamicin .The resistance rates of ampicillin and penicillin to Enterococcus f aecium were more than 90 .0% .Conclusion Enterococcus f aecalis is main En-terococcus in the First Affiliated Hospital of Chongqing Medical University .There is an obvious difference between the antibiotic re-sistance of the Enterococcus f aecalis and Enterococcus f aecium .So ,monitoring drug resistance of the Enterococcus shows great sig-nificance to the clinical treatment .
Résumé
Objective To explore the sensitivity of Enterococcus f aecium and Enterococcus f aecalis isolated from 2011 to 2013 and provide reference for anti-infection therapy .Methods The identification and drug sensitivity test of clinical isolates were carried out by using VITEK2 Compact system .Results The ratio of Enterococcus f aecium to Enterococcus f aecalis isolates was 1 .93 and it was increasing year by year .No vancomycin ,linezolid and tigecycline resistant Enterococcus f aecium and Enterococcus f aecalis i-solates was detected .The rates of Enterococcus f aecium sensitive to quinupristin-dalfopristin and tetracycline were higher than En-terococcus f aecalis(P<0 .05) ,and the rates of Enterococcus f aecium sensitive to nitrofurantoin ,ampicillin ,penicillin G ,moxifloxa-cin ,levofloxacin and ciprofloxacin were lower than that of Enterococcus f aecalis(P<0 .05) .Conclusion The detection rates of En-terococcus was shifting to Enterococcus f aecium ,and the trends became obvious year after year .The drug sensitivity of Enterococcus f aecium and Enterococcus f aecalis is different ,and doctors should choose the proper therapy according to their specific drug resist-ance .At present ,vancomycin ,linezolid and tigecycline are preffered for the treatment against infection caused by Enterococcus f aeci-um and Enterococcus f aecalis .