大肠埃希菌产超广谱β-内酰胺酶耐药监测

目的了解大肠埃希菌产超广谱β-内酰胺酶(ESBLs)菌株的耐药性,为临床合理使用抗菌药物提供实验依据。方法采用K-B法对3年内68株大肠埃希菌,进行药物敏感性测定和确证法检测ESBLs。结果确证37株产ESBLs,产酶率为54.4%;产ESBLs大肠埃希菌对15种抗菌药物的药敏结果中,对青霉素类,一、二、三代头孢菌素耐药率均>50.0%,对喹诺酮类环丙沙星耐药率约为70.0%,对亚胺培南敏感率为100.0%。结论应加强对大肠埃希菌ESBLs的监测并防治耐药菌株的传播流行。

Surveillance on Drug-resistance of ESBLs-producing Escherichia coli

OBJECTIVE To investigate the drug-resistance of ESBLs-producing Escherichia coli for guiding the clinical drug-using.METHODS The Kirby-Bauer agar diffusion method was used to analyze the drug resistance of 68 E.coli isolates in these three years.The ESBLs-producing strains were detected by confirmed test.RESULTS Thirty one ESBLs-producing strains were detected and the isolated rate was 54.4%;the resistant rates of these isolates were up to 50% to penicillin and three generations cephalosporin.The resistant rate to quinolone was about 70%.All of the strains were susceptible to imipenem.CONCLUSIONS More attention should be paid on the detection of ESBLs-producing E.coli and prevent the prevalence of the drug-resistant strains.