全自动血培养仪阳性病原菌种类及报警时间分析

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(收稿日期:2012-10-09) (本文编辑:连胜利)

①广东省佛山市顺德区桂洲医院 广东 佛山 528305通讯作者:廖忠全自动血培养仪阳性病原菌种类

及报警时间分析

廖忠① 叶杰① 陈振南①

【摘要】 目的:分析血培养阳性病原菌种类及仪器报警时间。方法:用BD BACTEC 9120全自动血培养仪检测笔者所在医院2010年4月-2012年4月共计2180份血标本,分析血标本在需氧瓶和厌氧瓶中生长细菌的种类及仪器报警时间。结果:2180例血培养标本中报警阳性282例,其中真阳性263例,阳性率为12.1%。分离出细菌269株,其中革兰阳性球菌占40.1%,革兰阴性杆菌占57.2%,真菌占2.6%。其中仅需氧瓶报阳的阳性率为6.3%,仅厌氧瓶报阳的阳性率为2.8%,需氧瓶及厌氧瓶均报阳的阳性率为2.9%;最快阳性检出时间为5.02 h,24 h 内检出的阳性数占69.1%,48 h 检出的阳性数占92.5%,72 h 检出的阳性数占97.0%;假阳性率为0.87%,假阴性率为0.09%。结论:应用BD BACTEC 9120全自动血培养仪同时进行需氧瓶及厌氧瓶培养能提高血培养阳性率,缩短了阳性检出时间。 【关键词】 血培养; 微生物; 细菌; 报警时间

Analysis of the Positive Pathogenic Bacteria and the Alarm Time by Automated Blood Culture System/LIAO Zhong,YE Jie,CHEN Zhen-nan.//Medical Innovation of China,2013,10(4):006-008

【Abstract】 Objective:To analyse the positive pathogenic bacteria of the blood culture and the alarm time.Method:A total of 2180 blood specimens were collected from April 2010 to April 2012 in our hospital and the specimens were detected by BD BACTEC 9120 automated blood culture system.Analyse the bacterial species and alarm time of the blood specimens in aerobic and anaerobic bottles.Result:282 blood culture positive samples were isolated from the 2180 blood culture samples,which was true positive in 263 cases.The positive rate of the blood culture was 12.1%,which 269 strains of pathogens were isolated,including Gram-positive cocci accounted for 40.1%,gram negative bacilli 57.2%,fungi 2.6%.However the positive rate was just 15.6% only from aerobic bottles and 5.7% only from anaerobic ones,and 20.9% from both of the two bottles.The fastest positive time was 5.02 h,during the test,the number of positive reactions accounted for 69.1% in 24 hours,92.5% in 48 hours,and 97% in 72 hours.The false positive rate was 0.87%,and the false negative rate was 0.52%.Conclusion:Application of both aerobic and anaerobic cultivation detected by BD BACTEC 9120 automated blood culture system can improve the blood culture positive rate,shorten the positive detection time. 【Key words】 Blood culture; Microbes; Bacteria; Alarm time

First-author ’s address:Guizhou Hospital of Shunde,Foshan 528305,China doi:10.3969/j.issn.1674-4985.2013.04.003

血培养已经成为菌血症及败血症诊断和病情监测的重要

手段,对临床针对性抗菌治疗至关重要。目前国内越来越多

医院采用全自动血培养仪进行血液标本的培养,不仅提高了阳性率,也大大缩短了检测时间;为了解血培养阳性细菌的种类、仪器报警时间及阳性率,就笔者所在医院2010年

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