上海某新建医院2016年细菌耐药性监测分析

Antimicrobial resistance surveillance of a newly established hospital in shanghai in 2016

  • 摘要: 目的 了解上海某新建医院2016年临床分离菌对常用抗菌药物的耐药性,为本医院临床医生提供合理的用药依据。方法 选择2016年1-12月所有临床分离细菌,并进行耐药性监测。结果 共收集非重复临床分离菌992株,其中革兰阳性菌282株占28.43%,革兰阴性菌710株占71.57%。耐甲氧西林金黄色葡萄球菌(MRSA)和耐甲氧西林凝固酶阴性葡萄球菌(MRCNS)的检出率分别为50.49%(52/103)和58.33%(21/36)。MRSA和MRCNS对大部分测试药物的耐药率均高于甲氧西林敏感株(MSSA)和MSCNS(P<0.05)。MRSA对磺胺甲噁唑/甲氧苄啶和利福平较敏感;MRCNS对利福平和米诺环素较敏感。葡萄球菌对万古霉素和利奈唑胺较敏感。粪肠球菌对绝大多数测试的抗菌药物的耐药率均低于屎肠球菌,两者对万古霉素也均敏感;大肠埃希菌和肺炎克雷伯菌属中产ESBLs菌株的检出率分别为50.22%(113/225)和32.40%(58/179),产ESBLs菌株对测试药物的耐药率均比非产ESBLs株高。肠杆菌科细菌除肺炎克雷伯菌外对碳青霉烯类抗菌药物仍高度敏感。不动杆菌属对亚胺培南和美罗培南的耐药率均为76.41%。结论 耐药菌株分离率增加,提示广泛耐药菌在某些病区内有流行播散趋势,因此需合理使用抗菌药物,加强细菌耐药性监测,积极控制医院感染。

     

    Abstract: OBJECTIVE To investigate the resistance profile of clinical isolates to commonly used antibiotics collected from a newly established hospital in Shanghai, so as to provide reasonable medication basis for clinicians in our hospital METHODS All clinical isolates from Jan. 2016 to Dec. 2016 were selected, and the resistance was monitored. RESULTS A total of 992 clinical isolates were collected in 2016, of which 282 strains were gram-positive bacteria and 710 strains were gram-negative bacteria, accounting for 28.43% and 71.57%, respectively. The detection rates of methicillin-resistant Staphylococcus aureus (MRSA) and methicillin-resistant coagulase-negative Staphylococcus (MRCNS) were 50.49%(52/103) and 58.33%(21/36) respectively. The resistant rates of MRSA and MRCNS to most antimicrobial agents were much higher than those of MSSA and MSCNS (P<0.05). MRSA strains were susceptible to trimethoprim-sulfamethoxazole and rifampin, and MRCNS strains were susceptible to rifampin and minocyline. All Staphylococcus strains were susceptible to vancomycin and linezolid. In Enterococcus spp., the resistant rates of E. faecalis strains to most of the antibiotics tested were much lower than those of E. faecium, and strains of both species were susceptible to vancomycin. The prevalences of ESBLs-producing strains were 50.22%(113/225) in E. coli and 32.40%(58/179) in Klebsiella spp. isolates on average. ESBLs-producing Enterobacteriaceae strains were more resistant than non-ESBLs-producing strains in terms of antibiotic resistance rates. The strains of Enterobacteriaceae were still highly susceptible to carbapenems but K. pneumoniae. About 76.41% of Acinetobacter spp. strains were resistant to imipenem and meropenem, respectively. CONCLUSION The isolation rate of drug resistant strains increased, suggesting that the widespread epidemic tendency of extensively drug-resistant bacteria in some areas, therefore, it is necessary to rationally use antibiotics, strengthen the monitoring of bacterial resistance, and actively control nosocomial infection.

     

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