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《高敏心肌肌钙蛋白(hs-cTn)临床应用中国专家共识》拟发布

2014-05-03 MedSci MedSci原创

《高敏心肌肌钙蛋白(hs-cTn)临床应用中国专家共识》初稿讨论会在广州召开。中华医学会心血管病学分会主任委员霍勇教授、候任主任委员葛均波院士、中华医学会检验医学分会副主任委员潘柏申教授及中国人民解放军总医院陈韵岱教授等十多位心内科和检验科专家共聚一堂,共同探讨《高敏心肌肌钙蛋白临床应用中国专家共识》的撰写。 会上,中国科学院院士、上海复旦大学附属中山医院教授葛均波等专家呼吁,规范hs-cTn临

《高敏心肌肌钙蛋白(hs-cTn)临床应用中国专家共识》初稿讨论会在广州召开。中华医学会心血管病学分会主任委员霍勇教授、候任主任委员葛均波院士、中华医学会检验医学分会副主任委员潘柏申教授及中国人民解放军总医院陈韵岱教授等十多位心内科和检验科专家共聚一堂,共同探讨《高敏心肌肌钙蛋白临床应用中国专家共识》的撰写。 会上,中国科学院院士、上海复旦大学附属中山医院教授葛均波等专家呼吁,规范hs-cTn临床应用,使这一心脏生物标志物的检测能更好地为临床服务。

据了解,hs-cTn检测以其高敏感性的优势在临床的应用日益增多。2011年,欧洲心脏病学会(ESC)指南推荐将hs-cTn作为急性心梗的诊断标志物。但目前在我国临床工作中医生对何时进行检测,如何对其结果进行诊断和鉴别诊断存在诸多疑问。

与会专家肯定了hs-cTn在急性胸痛患者中的价值,hs-cTn可以提早3小时发现心梗患者,并强调0、3、6小时连续动态监测对于急性胸痛诊断以及鉴别诊断的重要性,这些都将成为撰写《高敏心肌肌钙蛋白临床应用中国专家共识》的重要依据。

美国一项研究表明,与常规肌钙蛋白I检测方法相比,最新的高敏肌钙蛋白I检测方法可在急诊后3 h内更有效地确诊心肌梗死(MI)。

2012年《美国医学会杂志》(JAMA)上发表文章认为hs-cTn可以提早3小时发现心梗患者。

这项研究由德国汉堡大学心脏中心的Till Keller博士及其同事进行。研究者在3家德国胸痛中心2年内连续收治的1,818例疑似急性冠脉综合征成人患者中比较了最新高敏肌钙蛋白检测法(Architect STAT High Sensitive Troponin,雅培诊断部)与目前临床应用的肌钙蛋白检查法(Architect STAT troponin-I assay,雅培诊断部)的性能。共413例(23%)患者的最终出院诊断为MI。入院时和3 h后采集血液进行肌钙蛋白I检测和另外10种生物标志物的检测,在相同的时间点也进行了ECG。在排除MI方面,入院时进行的高敏肌钙蛋白I检测(诊断界值设在30 pg/ml的第99百分位数)的敏感性为82%,阴性预测值为95%。入院后3 h,该检测的敏感性为98%,阴性预测值为99%。这2个时间点进行的常规肌钙蛋白I检测也获得了相似结果。

在确诊MI方面,高敏肌钙蛋白I检测结果的变化具有指导意义。951例患者入院时的高敏肌钙蛋白I水平明显低于第99百分位数,但3 h内增至该界值之上。这一变化以及3 h后的阳性肌钙蛋白水平具有的阳性预测值为83%,明显高于类似的常规肌钙蛋白检测结果所具有的58%的阳性预测值。

进一步分析显示,高敏检测的优化相对变化为266%的界值。采用这一266%的变化以及入院时的第99百分位数界值,高敏检测的特异性和阳性预测值分别增至99%以上和近96%。在入院时ST段抬高或肌钙蛋白水平明确升高的1,176例亚组患者中,高敏检测在排除和确诊MI方面的准确性甚至更高。在这些患者中,该方法排除MI的最高阴性预测值为99%以上,确诊MI的最高阳性预测值为96%以上。

原始出处:
Keller T, Zeller T, Ojeda F, Tzikas S, Lillpopp L, Sinning C, Wild P, Genth-Zotz S, Warnholtz A, Giannitsis E, Möckel M, Bickel C, Peetz D, Lackner K, Baldus S, Münzel T, Blankenberg S.Serial changes in highly sensitive troponin I assay and early diagnosis of myocardial infarction.JAMA. 2011 Dec 28;306(24):2684-93

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