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南京医科大学学报(自然科学版)                                  第41卷第4期
               ·586 ·                     Journal of Nanjing Medical University(Natural Sciences)   2021年4月


             ·临床医学·

              2016—2019 年老年医学科重症监护室患者血流感染病原菌的

              分布与耐药性分析



              吴远帆 ,刘成成 ,范          坤 ,周苏明    1*
                             2
                                     2
                     1
               南京医科大学第一附属医院老年医学科ICU,检验学部,江苏                    南京 210029
              1                                  2

             [摘    要] 目的:分析某院老年医学科重症监护室患者血流感染病原菌分布及耐药性。方法:收集2016年1月—2019年12月
              该院老年医学科重症监护室住院患者血培养数据并用WHONET 5.6软件统计分析。将血培养阳性患者按年龄分为老年组(≥
              60岁)与非老年组(<60岁),比较两组患者血流感染病原菌的构成以及耐药性。结果:96例血培养阳性患者共分离到病原菌
              100株。其中,革兰阴性菌占63.0%,革兰阳性菌占22.0%,真菌占10.0%,厌氧菌占5.0%。革兰阴性菌检出居前3位的依次是
              肺炎克雷伯菌(25.0%)、大肠埃希菌(13.0%)、鲍曼不动杆菌(11.0%)。革兰阳性菌检出居前3位的依次是肠球菌(8.0%)、金黄
              色葡萄球菌(7.0%)和α⁃溶血性链球菌(7.0%)。肺炎克雷伯菌中碳青霉烯耐药肠杆科细菌(carbapenem⁃resistant Enterobacteria⁃
              ceae,CRE)占76%,其中检测到1株对头孢他定/阿维巴坦耐药的肺炎克雷伯菌,未检测到对替加环素或多黏菌素B耐药的菌
              株;鲍曼不动杆菌中碳青霉烯耐药鲍曼不动杆菌(carbapenem⁃resistant A. baumannii,CRAB)占81.8%,其中检测到1株对替加环
              素耐药,未检测到对多黏菌素B 耐药的菌株;金黄色葡萄球菌中耐甲氧西林金黄色葡萄球菌(methicillin⁃resistant Staphylococ⁃
              cus aureus,MRSA)占57.2%,未发现耐万古霉素和利奈唑胺的金黄色葡萄球菌。此外,检出1 株耐万古霉素屎肠球菌。两组患
              者分离的病原菌分布构成相似。与非老年组相比,老年组病原菌耐药率更高。结论:该院老年医学科重症监护室血流感染的
              病原菌以革兰阴性杆菌为主,且对碳青霉烯类药物耐药率高。
             [关键词] 老年;重症;血培养;病原菌;耐药

             [中图分类号] R197.323                   [文献标志码] A                      [文章编号] 1007⁃4368(2021)04⁃586⁃07
              doi:10.7655/NYDXBNS20210419



              Distribution and drug resistance of pathogens from patients with bloodstream infection in
              intensive care unit of geriatric medicine from 2016 to 2019

                                        2
                         1
                                                  2
              WU Yuanfan ,LIU Chengcheng ,FAN Kun ,ZHOU Suming  1*
              1 Geriatric Intensive Care Unit,Department of Laboratory Medicine,the First Affiliated Hospital of Nanjing Medical
                                        2
              University,Nanjing 210029,China
             [Abstract] Objective:To investigate the clinical distribution and resistance characteristics of pathogens isolated from bloodstream
              infection patients in a intensive care unit of geriatric medicine(geriatric ICU)in a tertiary teaching hospital. Methods:Blood culture
              results and clinical data of hospitalized patients in geriatric ICU from 2016 to 2019 were collected and then analyzed using WHONET
              5.6 software. Patients with positive blood culture were divided into old group(≥60 years)and non⁃old group(<60 years)according to
              age. And the constitute as well as drug resistance of blood culture pathogens were compared between the two groups. Results:A total of
              100 strains of pathogen were isolated from 96 patients with positive blood culture. Of the 100 isolates,gram negative bacilli,gram
              positive cocci,fungi and anaerobes accounted for 63%,22%,10%,and 5%,respectively. The top three gram negative pathogens were
              K. pneumoniae(25%),E. coli(13%)and A. baumannii(11%). The top three gram positive pathogens were Enterococcus(25%),S.
              aureus(13%)and viridians Streptococcus(11%). The proportion of carbapenem⁃resistant Enterobacteriaceae(CRE)in K. pneumoniae,
              carbapenem⁃resistant A. baumannii(CRAB)in A. baumannii and methicillin⁃resistant Staphylococcus aureus(MRSA)in S. aureus were
              72.0%,81.3% and 57.2%,respectively. E. coli resistant to carbapenem and S.aureus resistant to vancomycin or linezolid were not

             [基金项目] 江苏省干部保健科研课题(BJ18015)
              ∗
              通信作者(Corresponding author),E⁃mail:zhousmco@aliyun.com
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