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头孢美唑与加替沙星联合应用对33株产ESBL细菌的作用

The study on the antibacterial activity of Cefmetazole combined with gatifloxacin against 33 strains extended- spectrum beta- lactamase production bacteria
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摘要 目的:评价头孢美唑与加替沙星对33株临床分离的产超广谱β-内酰胺酶(ESBL)细菌的联合抗菌效应.方法:采用棋盘法设计,微量肉汤稀释法测定.测定不同浓度组合的两种抗菌药物对33株ESBL菌(其中20株大肠埃希菌,13株肺炎克雷伯菌)的最低抑菌浓度,并计算FIC指数.结果:头孢美唑与加替沙星联合应用后对大肠埃希菌和肺炎克雷伯菌的浓度累积抑菌百分率曲线均比单独应用明显左移.FIC指数结果表明:头孢美唑与加替沙星联合应用后对大肠埃希菌65%为协同作用,25%为相加作用,10%为无关作用,无拮抗作用;对肺炎克雷伯菌38.46%为协同作用,61.54%为相加作用,无相关作用,无拮抗作用.结论:对多种抗生素耐药的ESBL菌对加替沙星耐药率较高,对头孢美唑较稳定.两种抗菌药联合应用后MIC明显降低,抗菌作用明显加强.
出处 《中国药物应用与监测》 CAS 2003年第5期62-63,70,共3页 Chinese Journal of Drug Application and Monitoring
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