【摘要】 目的对山东乳山市人民医院近3年住院患者分离鲍曼不动杆菌的临床分布、耐药性及同源性进行分析,为控制医院感染提供依据。方法收集2013-2015年住院患者送检临床标本中分离的鲍曼不动杆菌,分析其分布情况和耐药性变化趋势。随机选取60株菌株采用脉冲场凝胶电泳(PFGE)法进行同源性分析。结果 3年间共分离出鲍曼不动杆菌567株,检出数逐年升高,3年分别为85株、156株、326株;标本来源以呼吸科和ICU为主,分别占47.4%和23.8%;标本种类以痰液为主,占62.1%,其次为分泌物15.2%。药敏结果显示鲍曼不动杆菌对多黏菌素B均敏感,对甲氧苄啶-磺胺甲唑、氨苄西林100%耐药,3年显示对亚胺培南、美罗培南、头孢曲松、甲氧苄啶-磺胺甲唑耐药率有显著升高,对庆大霉素耐药率显著下降。选取的60株鲍曼不动杆菌根据PFGE图谱可分为4型,A型为主要流行株。结论鲍曼不动杆菌主要分离自呼吸道感染住院患者,其对常用抗菌药物耐药严重,且存在克隆播散。更多还原

【Abstract】 Objective To analyze the antimicrobial resistance profile and homology of the Acinetobacter baumannii strains isolated from Rushan People’s Hospital in a three-year period for better control of hospital infections. Methods A. baumanniistrains were isolated from clinical specimens during the period from 2013 to 2015. Homology analysis were conducted by pulsedfield gel electrophoresis(PFGE) for 60 randomly selected isolates. Results A total of 567 A. baumannii isolates were isolated, 85 isolates in 2013, 156 in 2014, and 326 in 2015. These isolates were mainly from Department of Respiratory Diseases(47.4 %) and ICU(23.8 %). Overall, 62.1 % of the isolates were from sputum specimens followed by secretions(15.2%). All isolates were sensitive to polymyxin B, but all resistant to sulfamethoxazole and ampicillin. The A. baumannii isolates showed increasing resistance rate to imipenem, meropenem, ceftriaxone, and trimethoprim-sulfamethoxazole over the 3-year period, but decreasing resistance rate to gentamicin. The 60 selected isolates were grouped into 4 types by PFGE. A-type was the main pattern. Conclusions A. baumannii strains were mainly isolated from inpatients with respiratory tract infections. The A. baumannii strains showed serious antimicrobial resistance associated with possible clonal spread in this hospital.更多还原