检验医学 ›› 2019, Vol. 34 ›› Issue (4): 305-308.DOI: 10.3969/j.issn.1673-8640.2019.04.003

• 临床应用研究·论著 • 上一篇    下一篇

1 852例血培养结果影响因素分析

石大可1, 倪语星1, 韩立中2, 萧晨路2()   

  1. 1.上海交通大学医学院附属瑞金医院医院感染管理科,上海 200025
    2.上海交通大学医学院附属瑞金医院临床微生物科,上海 200025
  • 收稿日期:2018-04-10 出版日期:2019-04-30 发布日期:2019-05-17
  • 作者简介:null
    作者简介:石大可,男,1990年生,学士,医师,主要从事院内感染研究。

Influence factor analysis on 1 852 cases of blood culture

SHI Dake1, NI Yuxing1, HAN Lizhong2, XIAO Chenlu2()   

  1. 1. Department of Infection Control,Ruijin Hospital,Shanghai Jiaotong University School of Medicine,Shanghai 200025,China
    2. Department of Clinical Microbiology,Ruijin Hospital,Shanghai Jiaotong University School of Medicine,Shanghai 200025,China
  • Received:2018-04-10 Online:2019-04-30 Published:2019-05-17

摘要:

目的 分析上海交通大学医学院附属瑞金医院血培养结果的影响因素。方法 采用BD BACTECFX全自动血培养仪及VITEK MS检测系统培养和鉴定细菌。采用Logistic回归分析和受试者工作特征(ROC)曲线评价各变量对血培养结果的影响。结果 共收集1 852瓶血培养样本,其中155瓶阳性,阳性检出率为8.37%。检出革兰阳性菌59株(38.06%)、革兰阴性菌90株(58.06%)、真菌6株(3.87%)。血培养平均报阳时间为34.81 h。Logistic回归分析结果显示,患者年龄[比值比(OR)=1.161,95%可信区间(CI)1.069~1.260,P=0.000]、采血时患者体温(OR=2.680,95%CI 1.918~3.744,P=0.000)、采血量(OR=1.475,95%CI 1.059~2.055,P=0.022)及白细胞计数(OR=3.758,95%CI 2.676~5.278,P=0.000)是血培养阳性的影响因素。结论 患者年龄、采血量、白细胞计数、采血时患者体温对血培养阳性结果有影响。应正确采集血培养样本,以提高早期血流感染(BSI)的检出率,帮助临床及时进行抗感染治疗。

关键词: 血培养, 血流感染, 血液样本, 影响因素

Abstract:

Objective To evaluate the influence factors that might affect the results of blood culture in Shanghai Jiaotong University School of Medicine Ruijin Hospital. Methods Blood specimens were cultured by BD BACTECFX automatic blood culture instrument,and the microorganisms were identified by VITEK MS detection system. The effects of the variables on the results of blood culture were evaluated by Logistic regression analysis and receiver operating characteristic(ROC)curve. Results A total of 1 852 blood culture bottles were collected,155 bottles were positive,and the positive rate was 8.37%. Gram positive bacteria accounted for 38.06%(59 isolates),Gram negative bacteria accounted for 58.06%(90 isolates),and fungi accounted for 3.87%(6 isolates). The average time of reporting positivity was 34.81 h. Logistic regression analysis showed that age [odds ratio(OR)=1.161,95% confidence interval(CI) 1.069-1.260,P=0.000],the temperature of the patients on the time of blood specimen collection(OR=2.680,95%CI 1.918-3.744,P=0.000),the volume of blood collection(OR=1.475,95%CI 1.059-2.055,P=0.022)and white blood cell count(OR=3.758,95%CI 2.676-5.278,P=0.000)were influence factors for the positive rate of blood culture. Conclusions Age,the volume of blood collection,white blood cell count and the temperature of the patients on the time of blood specimen collection are correlated to the positive rate of blood culture. Collecting blood specimens correctly may increase the detection rate of blood stream infection(BSI),which is helpful to clinical anti-infection treatment.

Key words: Blood culture, Blood stream infection, Blood specimen, Influence factor

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