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JACC:白大衣高血压与心血管风险之间究竟有着怎样的关联?

2016-11-12 fsy MedSci原创

白大衣高血压(WCH)及白大衣效应(WCE)在心血管疾病(CVD)风险的发展过程中的作用仍然很难理解。来自美国的研究人员使用了来自基于群体的11项队列IDACO(关于心血管结果的动态血压监测的国际数据库)研究的数据,该研究比较了653例WCH患者和653名健康对照者常规血压测量的日间动态血压监测数据。欧洲高血压指南被用于评估5阶段风险。低风险被定义为0至2个危险因素,高风险被定义为≥3至5个危险因

白大衣高血压(WCH)及白大衣效应(WCE)在心血管疾病(CVD)风险的发展过程中的作用仍然很难理解。

来自美国的研究人员使用了来自基于群体的11项队列IDACO(关于心血管结果的动态血压监测的国际数据库)研究的数据,该研究比较了653例WCH患者和653名健康对照者常规血压测量的日间动态血压监测数据。

欧洲高血压指南被用于评估5阶段风险。低风险被定义为0至2个危险因素,高风险被定义为≥3至5个危险因素,糖尿病和/或先前CVD事件发生史。研究人员在653例未治疗的WCH受试者和653名正常血压对照受试者之间进行了年龄和队列匹配。

在逐步线性回归模型中,患者每增加10岁,收缩性WCE则增加3.8mmHg(95%置信区间[CI]:3.1至4.6mmHg),并且在具有或没有先前的CVD事件的低风险和高风险患者中也出现了类似的情况。在平均10.6年的随访中,159名高危人群中新发CVD事件的发生率高于159名年龄匹配的高风险血压正常人群(调整风险比[HR]:2.06;95 %CI:1.10至3.84;p=0.023)。

对于具有低风险WCH和年龄匹配的低风险血压正常494名受试者中,HR并不显著。根据年龄的亚组分析显示,WCH与CVD事件之间的关联仅限于高龄(年龄≥60岁)的高危WCH受试者;在老年高危患者组中调整后的HR为2.19(95%CI:1.09至4.37;p=0.027),在老年低危患者组中为0.88(95%CI:0.51至1.53;p=0.66)(相互作用p=0.044)。

以上研究结果显示,WCE大小与老龄化相关,与CVD风险无关。在大多数WCH人群中,CVD的风险与年龄和风险调整后的正常对照组大致相当。

原始出处:

Stanley S. Franklin,Lutgarde Thijs,Kei Asayama,et al.The Cardiovascular Risk of White-Coat Hypertension. J Am Coll Cardiol. 2016;68(19):2033-2043.

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    2016-12-22 hbwxf
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