JACC Cardiovasc Imag:CAC评分可更好地预测符合他汀治疗标准患者的风险

2018-02-12 国际循环编辑部 国际循环

对于符合他汀治疗试验证据的患者,冠状动脉钙化(CAC)评分能否进一步增加风险预测价值尚不清楚。近期,JACC Cardiovasc Imaging发表的一项最新研究对此问题进行了探讨。

对于符合他汀治疗试验证据的患者,冠状动脉钙化(CAC)评分能否进一步增加风险预测价值尚不清楚。近期,JACC Cardiovasc Imaging发表的一项最新研究对此问题进行了探讨。

研究者采用对多种族动脉粥样硬化(MESA)研究中5600例基线无动脉粥样硬化性心血管疾病(ASCVD)的45~84岁受试者的数据进行分析。随访10年,共计分别发生ASCVD及冠心病(CHD)事件354例和219例。根据有关他汀治疗行一级预防的7项随机对照临床试验的入选标准,MESA受试者中73%需行他汀治疗,55岁以上受试者这一比例更是高达91%。对需行他汀治疗的受试者的分析显示,很多(44%)CAC评分为0;CAC评分为0者的ASCVD及CHD发生率较低(分别为3.9/1000人年和1.7/1000人年)。进一步分析发现,随着CAC评分的增加,上述受试者的ASCVD及CHD事件发生率递增;CAC评分>100者(比例占27%)的ASCVD及CHD发生率可分别达18.9/1000人年和12.7/1000人年。因此,十年间预防1例研究终点事件所估计需治疗患者数量(NNT)随CAC评分不同而有很大差异。关于ASCVD事件,CAC评分为0及>100者的上述NNT分别为87和19;对CHD事件,上述NNT则分别为197和28。

该研究结果显示,MESA研究中的受试者大多数均需接受他汀治疗做一级预防。在需行他汀治疗做一级预防的受试者中,CAC评分为0和CAC评分>100均非常常见,但两者的心血管风险不同,前者较低,后者较高。上述信息无疑有助于指导临床实践中的共同决策从而让他汀治疗惠及最可能从中受益者。因此,基于上述研究结果,临床医生需在与患者就他汀治疗适应证及益处进行讨论时涉及CAC信息。

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    2018-09-28 quxin068
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    2018-10-26 hbwxf
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    2018-02-15 三生有幸9135

    学习一下谢谢分享

    0

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