JAMA Cardiology:重磅!高敏肌钙蛋白T在急性冠脉综合征中的意义!

2017-12-19 MedSci MedSci原创

临床医生需要了解如何使用高敏肌钙蛋白(hsTnT)检测方法来确定30天不良心脏事件(ACE)风险极低的患者。近期,一项发表在杂志JAMA Cardiology上的研究旨在确定在急诊介入后0小时和3小时检测结果为阴性的hsTnT是否能够确定30天ACE低于1%风险的患者。研究者们对2011年至2015年间美国15个急诊室进行了此项前瞻性观察性研究,受试人群包括21岁及以上的患者,且在急诊室诊断为疑似

临床医生需要了解如何使用高敏肌钙蛋白(hsTnT)检测方法来确定30天不良心脏事件(ACE)风险极低的患者。

近期,一项发表在杂志JAMA Cardiology上的研究旨在确定在急诊介入后0小时和3小时检测结果为阴性的hsTnT是否能够确定30天ACE低于1%风险的患者。

研究者们对2011年至2015年间美国15个急诊室进行了此项前瞻性观察性研究,受试人群包括21岁及以上的患者,且在急诊室诊断为疑似急性冠状动脉综合征。在1690名符合条件的患者中,15名(无心肌肌钙蛋白T测量)和320名(缺少0小时或3小时样本)患者被排除在分析之外。

随后,进行了连续hsTnT的测量(第五代罗氏Elecsys hsTnT测定)。每个患者的连续血液样本是在急诊科就诊后(一度被确定为潜在的急性冠脉综合征患者)和3小时,6至9小时以及12至24小时后收集的。不良心脏事件被定义为心肌梗塞、紧急血运重建或死亡。hsTnT测定的上限参考水平定义为第99百分位,在单独的健康美国队列中被确定为19ng/L。如果0小时和3小时的hsTnT水平低于上限参考水平,则排除急性心肌梗塞。黄金标准诊断临床终点委员会决定。数据收集后制定30天ACE的假设。

最终,此项研究结果显示:在1301名健康志愿者中(50.4%为女性,平均年龄为48岁),上限参考水平为19ng/L。在1600例疑似急性冠脉综合征患者中(48.4%为女性,中位年龄55岁),基线时单个hsTnT水平低于6 ng/L对AMI的预测值为99.4%。在974例患者中出现(77.1%)在0小时和3小时hsTnT水平为19 ng/L或更低,30天ACE的阴性预测值为99.3%(95%CI,99.1-99.6)。对于急性心肌梗塞,使用性别特异性分界点,女性(0.952)和男性(0.962)的C统计相似。

此项研究结果表明:单一的hsTnT水平低于6 ng/L与AMI的风险显着降低相关,而检测的一系列水平为19 ng/L或更低的患者,其30天发生ACE的风险低于1%。

原始出处:
Peacock WF, Baumann BM, et al. Efficacy of High-Sensitivity Troponin T in Identifying Very-Low-Risk Patients With Possible Acute Coronary Syndrome. JAMA Cardiol. 2017 Dec 13. doi: 10.1001/jamacardio.2017.4625.

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    2017-12-21 xxxx1054
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    2017-12-20 明崖

    学习了.期待进一步研究

    0

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