JACC:冠脉钙化有助于推荐他汀类治疗分类

2015-10-22 高晓方 译 医学论坛网

冠脉钙化(CAC)的存在与否是否有助于适宜他汀类治疗患者的再分类?美国学者对此问题开展了一项研究,结果表明,依据当前美国心脏病学会/美国心脏学会(ACC/AHA)指南,在适宜他汀类治疗的个体中存在异质性。CAC的存在将使约50%的不适宜他汀类治疗候选者得以重新分类。相关论文发表于《美国心脏病学会杂志》。 此项研究利用了来自于男、女性(年龄45至84岁)纵向研究MESA(动脉粥样硬化多种族

冠脉钙化(CAC)的存在与否是否有助于适宜他汀类治疗患者的再分类?美国学者对此问题开展了一项研究,结果表明,依据当前美国心脏病学会/美国心脏学会(ACC/AHA)指南,在适宜他汀类治疗的个体中存在异质性。CAC的存在将使约50%的不适宜他汀类治疗候选者得以重新分类。相关论文发表于《美国心脏病学会杂志》。

此项研究利用了来自于男、女性(年龄45至84岁)纵向研究MESA(动脉粥样硬化多种族研究)的数据。基线时受试者均无临床心血管疾病。应用降脂药物、低密度脂蛋白胆固醇(LDL-C)信息丢失以及计算动脉粥样硬化性心血管疾病(ASCVD)10年风险所需信息丢失的受试者被排除于分析之外。年龄大于75岁和LDL-C<70 mg/dl的受试者亦被排除在外。将受试者分为依据ACC/AHA指南推荐他汀类治疗组、考虑中等剂量他汀类治疗组(非糖尿病、LDL-C 70-189 mg/dl和动脉粥样硬化心血管疾病10年风险为5%至7.5%)和不推荐他汀类治疗组。对各组受试者进行CAC评分,并依据CAC = 0、CAC 1-100和CAC >100计算三组受试者的事件率。评估在利用当前ACC/AHA胆固醇指南时,冠脉钙化存在与否是否有助于对推荐他汀类治疗的患者进行重分类。

 结果显示,共有4758例MESA受试者(平均年龄59 ± 9岁,男性47%)被纳入分析。在这些受试者中,2377例依据当前ACC/AHA指南将被推荐他汀类治疗,589例将被考虑应用他汀类治疗,1792例将不会推荐应用他汀类治疗。他汀类推荐组、他汀类考虑组和不推荐他汀类组的CAC评分为0受试者百分比分别为41.4%(978/2377)、57.4%(338/589)和79.1%(1417/1792)。

在中位随访10.3年期间,247例受试者被诊断为ASCVD,155例出现冠心病(CHD)事件。在各组受试者中,CAC均与ASCVD和CHD高发生率具有相关性。在推荐他汀类治疗且CAC=0的受试者中ASCVD事件发生率为5.2(5.0-7.0)/1000 人年,在CAC>100的受试者中事件发生率为15.4(12.5-18.9)/1000 人年。在考虑他汀类治疗且CAC=0的受试者中ASCVD事件发生率为1.5(0.6-3.6)/1000 人年,在CAC>100的受试者中事件发生率为6.3(2.4-16.8)/1000 人年。在不推荐他汀类治疗且CAC=0的受试者中ASCVD事件发生率为1.3(0.9-2.1)/1000 人年,在CAC>100的受试者中事件发生率为2.7(1.4-5.0)/1000 人年。

原文出处:

Nasir K, Bittencourt MS, Blaha MJ, et al. Implications of Coronary Artery Calcium Testing Among Statin Candidates According to American College of Cardiology/American Heart Association Cholesterol Management Guidelines: MESA (Multi-Ethnic Study of Atherosclerosis). J Am Coll Cardiol.2015

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    2016-01-05 hbwxf
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    2015-10-24 nizongzan

    好好学习争取找到灵感

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    2015-10-22 owlhealth

    看看

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