降钙素原在血流感染中的临床应用分析

被引:10
作者
张丽
侯毅翰
张民伟
魏乔
高流芳
机构
[1] 厦门大学附属第一医院重症医学科
关键词
降钙素原; 血流感染; 脓毒症;
D O I
暂无
中图分类号
R446.6 [免疫学检验];
学科分类号
100208 ;
摘要
目的评价血清降钙素原(Procalcitonin,PCT)区分革兰阴性菌(G-菌)或革兰阳性菌(G+菌)血流感染的意义。方法收集我院重症医学科(ICU)2012年1月-2013年6月血流感染病例66例,根据血培养结果分为革兰阳性菌感染组(G+菌感染组)与革兰阴性菌感染组(G-菌感染组),在根据病情严重性进一步分组后,统计分析PCT、C反应蛋白(CRP)、白细胞计数(WBC)等炎症指标。结果 PCT在G-和G+菌感染组间存在显著差异(P<0.01);且在G-菌组中严重脓毒症和脓毒症患者间PCT亦存在显著差异(P<0.05)。血清PCT检测用于区分G-、G+菌血流感染的ROC曲线下面积为0.937(95%CI:0.877~0.997,P<0.01),当PCT为7.71 ng/ml时,对G-菌感染组诊断价值较高,敏感性82.1%,特异性89.3%,阳性预测值91.5%,阴性预测值77.9%。结论 PCT可作为区分G-、G+菌导致的血流感染的生物学标志之一,且与G-菌引起的脓毒症的严重程度密切相关。以PCT>7.7 ng/ml为界点诊断G-菌导致的血流感染具有较高的敏感性和特异性。
引用
收藏
页码:603 / 605
页数:3
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