不同炎症因子对细菌性血流感染所致脓毒症患者的早期诊断价值  被引量:131

The diagnostic value of different pro-inflammatory factor in early diagnosis of sepsis in patients with bloodstream infection

在线阅读下载全文

作  者:陈炜[1] 赵磊[1] 牛素平[1] 王锁柱[1] 盛博[1] 甄洁[1] 古旭云[1] 吕超[1] 

机构地区:[1]首都医科大学附属北京世纪坛医院重症医学科,100038

出  处:《中华危重病急救医学》2014年第3期165-170,共6页Chinese Critical Care Medicine

基  金:北京市自然科学基金项目(7123219)

摘  要:目的 比较降钙素原(PCT)、C-反应蛋白(CRP)、内毒素等炎症因子在细菌性血流感染所致脓毒症患者中的水平差异及其早期诊断价值.方法 回顾性分析2012年2月至2013年5月入住首都医科大学附属北京世纪坛医院重症监护病房(ICU)确诊为脓毒症且血培养阳性的132例患者的临床资料,根据血培养结果将脓毒症患者分为革兰阴性(G-)杆菌血流感染组(98例)和革兰阳性(G+)球菌血流感染组(34例),比较两组患者6h内的炎症因子,如白细胞计数(WBC)、中性粒细胞比例(N)、CRP、PCT、内毒素水平等的差异及其之间的相关性;绘制各炎症因子对血流感染所致脓毒症诊断的受试者工作特征曲线(ROC曲线),根据曲线下面积(AUC)来评价其对血流感染所致脓毒症的诊断价值,根据最佳诊断临界值评估各数值对血流感染诊断的敏感性和特异性.结果 ①G-菌组PCT、CRP、内毒素水平明显高于G+菌组[PCT(μg/L):5.11(0.99,18.00)比1.00(0.36,2.73),Z=49.647,P=0.000; CRP(mg/L):111.5±57.4比75.9±56.6,t=9.947,P=0.000;内毒素(ng/L):18.00(8.75,28.00)比5.00(5.00,6.25),Z=52.333,P=0.000],而WBC、N差异无统计学意义.②相关性分析显示:G菌组患者PCT与CRP(r=0.671,P=0.000)、PCT与内毒素(r=0.916,P=0.000)、CRP与内毒素(r=0.687,P=0.004)均呈正相关;G+菌组患者PCT与CRP(r=0.620,P=0.000)、PCT与内毒素(r=0.487,P=0.010)、PCT与WBC(r=0.537,P=0.001)、PCT与N(r=0.432,P=0.011)、CRP与内毒素(r=0.674,P=0.000)、内毒素与WBC(r=0.197,P=0.024)均呈正相关;而所有细菌性血流感染患者PCT与CRP(r=0.538,P=0.000)、PCT与内毒素(r=0.740,P=0.000)、PCT与WBC (r=0.259,P=0.003)、CRP与内毒素(r=0.579,P=0.000)、内毒素与WBC(r=0.197,P=0.024)均呈正相关.③ROC曲线分析显示:在G-菌血流感染所致脓毒症患者,PCT的AUC为0.825,最佳诊断临界值>2.Objective To investigate the expression of different inflammatory variables, such as procalcitonin (PCT), C-reactive protein (CRP), and endotoxin in septic patients with bacterial bloodstream infection, in order to assess the value of these variables in early diagnosis. Methods The clinical data of 132 bacterial bloodstream infection patients with clinical diagnosis of sepsis in intensive care unit (ICU) of Beijing Shijitan Hospital of Capital Medical University from February 2012 to May 2013 were analyzed retrospectively. Patients were divided into Gram-negative ( G- ) bacterial bloodstream infection group (n = 98 ) and Gram-positive ( G ± ) bacterial bloodstream infection group (n = 34) according to the result of blood culture. The inflammatory variables including white blood cell (WBC) count, percentage of neutrophils (N), CRP, PCT mad level of endotoxin in blood of both groups within 6 hours of bloodstream infection were compared, and their correlation was analyzed. The receiver operating characteristic (ROC) curve of inflammatory variables for the diagnosis of bloodstream infection was plotted, and their diagnostic value for bloodstream infection was evaluated according to area under ROC curve (AUC), and finally the sensitivity and specificity of inflammatory variables for bloodstream infection were assessed based on the best diagnostic cut-off points. Results (1) The levels of the variables, including PCT, CRP, and endotoxin content in the G- bacterial bloodstream infection group were significantly higher than that of G ± bacterial bloodstream infection group [ PCT (ug/L) : 5.11 (0.99, 18.00) vs. 1.00 (0.36, 2.73), Z=49.647, P=0.000; CRP (mg/L): 111.5 ± 57.4 vs. 75.9 ± 56.6, t=9.947, P=0.000; endotoxin (ng/L): 18.00 (8.75, 28.00) vs. 5.00 (5.00, 6.25), Z=52.333, P=0.000]. There was no significant difference in WBC and N between two groups. (2) The results of the correlation coefficient of the inflammatory variables sho

关 键 词:降钙素原 C-反应蛋白 内毒素 血流感染 脓毒症 

分 类 号:R459.7[医药卫生—急诊医学]

 

参考文献:

正在载入数据...

 

二级参考文献:

正在载入数据...

 

耦合文献:

正在载入数据...

 

引证文献:

正在载入数据...

 

二级引证文献:

正在载入数据...

 

同被引文献:

正在载入数据...

 

相关期刊文献:

正在载入数据...

相关的主题
相关的作者对象
相关的机构对象