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突流体C-反应蛋白临床决策限值和周围假肢关节感染的诊断准确性

John L Miamidian¹, Krista Toler¹, Alex McLaren²

¹Department of Diagnostics Research and Development, Zimmer Biomet, Warsaw, USA.

|January 25, 2024

概括

与血清CRP相比,流体C反应蛋白 (SF-CRP) 是诊断周围假肢关节感染 (PJI) 的优越生物标志物. 这项研究验证了SF-CRP最佳切线为4.45 mg/L,达到86.1%的灵敏度和87.1%的特异性.

科学领域:

整形外科整形外科整形外科
传染性疾病传染性疾病
临床化学临床化学

背景情况:

C-反应蛋白 (CRP) 是周围假肢关节感染 (PJI) 的关键生物标志物.
突液 (SF) -CRP显示了PJI的诊断优越性比血清CRP.
以前的SF-CRP值缺乏PJI诊断的正式验证.

研究的目的:

在单一临床实验室环境中验证SF-CRP用于PJI诊断的最佳临床决策极限.
将SF-CRP的诊断性能与其他PJI生物标志物进行比较.

主要方法:

从部和膝关节关节修复手术中前性收集的突液样本 (n=96,061) 的回顾性分析.
使用了接收器操作特征 (ROC) 和曲线下的面积 (AUC) 分析.
尤登指数优化了SF-CRP的临床决策极限.

主要成果:

在SF-CRP中,PJI诊断的高AUC为0.929.
确定了4.45 mg/L的最佳SF-CRP截止值.
这种切线在验证组中产生了86.1%的灵敏度和87.1%的特异性.

结论:

这项研究提供了SF-CRP用于PJI诊断的最大单一临床实验室评估.
经过验证的SF-CRP切线值为4.45 mg/L,提供了可靠的诊断值.
实验室验证的SF-CRP测定可能比血清CRP更好用于PJI诊断.

关键词:

c-反应性蛋白 (crp) 是一种临床实验室临床实验室诊断性表现的诊断性表现是什么部和膝盖关节整形术周围假肢关节感染突液分析突液分析

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