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血清降钙素原对血流细菌感染中G^-和G^+菌的鉴别诊断价值 被引量:12

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摘要 目的通过分析血流感染患者G-和G+菌感染中血清降钙素原(PCT)浓度的变化,探讨PCT对G-和G+菌鉴别诊断中的临床应用价值。方法选取2013年7月—2014年3月该院收治的具有血流感染症状的110例住院危症患者为研究对象,检测所有患者血清(PCT)水平,比较革兰阴性(G-)菌、革兰阳性(G+)菌血流感染患者的PCT水平并判断PCT的诊断性能。结果 110例患者中G-菌46例,占41.8%,G+菌64例,占58.2%;64例G+菌患者的PCT水平中位数为1.67μg·L-1、46例G-菌患者的PCT水平中位数为18.81μg·L-1,2组菌种患者PCT水平比较,差异具有统计学意义(P<0.05);曲线下面积(AUC)为0.932,95%CI:0.881~1.003,当界值(Cut-off)设为7.67μg·L-1,血清PCT水平区分G-菌、G+菌感染的灵敏度为91.7%,特异性为94.4%。结论血清PCT水平是危重患者细菌感染诊断的生物学标致之一,对鉴别G-菌和G+菌引起的血流感染具有一定的临床应用价值。
作者 谢瑞玉 谢晖
出处 《安徽医药》 CAS 2015年第1期142-143,共2页 Anhui Medical and Pharmaceutical Journal
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