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JACC:冠状动脉钙化和传统危险因素可预测10年冠心病风险

2015-10-07 崔倩 译 MedSci原创

一些研究已经证明对于冠状动脉心脏疾病(CHD)风险预测,除了传统的危险因素,使用冠状动脉钙化(CAC)具有巨大潜力。然而,到目前为止,没有开发出来任何加入CAC的风险分数。这项研究的目的是获得并验证了一种新的风险分数,通过使用CAC和传统的危险因素来评估10年的CHD风险。在MESA(动脉粥样硬化的多种族研究)研究中,研究人员进行了一项包含年龄为45〜84岁的6814名参与者的前瞻性以社区为基础的

一些研究已经证明对于冠状动脉性心脏病(coronary artery heart disease, CHD,简称冠心病)的风险预测中,除了传统的危险因素,冠状动脉钙化(CAC)也具有巨大潜力。然而,到目前为止,没有开发出来任何关于CAC的风险分数。

这项研究的目的是获得并验证了一种新的风险分数,通过使用CAC和传统的危险因素来评估10年的CHD风险。

在MESA(动脉粥样硬化的多种族研究)研究中,研究人员进行了一项包含年龄为45〜84岁的6814名参与者的前瞻性以社区为基础的队列研究,这些参与者在基线时都没有临床心脏疾病,随访时间为10年。 MESA是一项种族平衡研究,其中包括39%的非西班牙裔白人,12%的美籍华人,28%的非裔美国人和22%的西班牙裔美国人。外部验证是在HNR(海因茨利多富召回研究)和DHS(达拉斯心脏研究)进行的。

在MESA风险评分中,CAC的纳入显著改善了风险预测(C-统计 0.80 vs 0.75,P<0.0001)。HNR和DHS的研究外部验证提供了很好的识别和校准依据。哈勒尔的C-统计是HNR为0.779,DHS为0.816。此外,在事件和非事件之间估计的10年风险差异约为8%至9%,这表明了较好的识别作用。平均校准,或整体校准,是两项研究中均较好,平均预测的10年风险是百分之一观察事件速率的一半。

一个精确的估计10年CHD风险可以通过使用传统的危险因素和CAC获得。该MESA风险评分,在MESA网站可进行在线使用,这可用于帮助临床医生在沟通患者风险和决策基于风险的治疗策略时使用。

原始出处:

Robyn L. McClelland,Neal W. Jorgensen,Matthew Budoff,et al.10-Year Coronary Heart Disease Risk Prediction Using Coronary Artery Calcium and Traditional Risk Factors,JACC,2015.10.6

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    2015-11-07 hbwxf
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