JAMA:24小时和夜间血压与心血管事件风险

2019-08-07 MedSci MedSci原创

研究认为,24小时和夜间血压测量值与更高的死亡风险和综合心血管结果显著相关,是估计CV风险的最佳指标

血压(BP)是总死亡率和心血管(CV)特异性致命和非致命结果的已知危险因素。近日研究人员就白天及夜间BP指数与死亡及复合CV事件的相关性进行考察。

研究从1988年5月至2010年5月,收集了11135名欧洲、亚洲和南美洲的11135名成人纵向人群队列研究数据,对参与者进行24小时血压测量以及浸渍比(夜间除以日间读数)。研究的主要终点为BP增量20/10 mm Hg相关的CV事件,包括CV死亡率和非致命性冠状动脉事件、心力衰竭和中风。

11135名受试者,平均年龄54.7岁,女性占49.3%,2836名受试者死亡(18.5/1000人年),2049名受试者(13.4/1000人年)经历了一次CV事件,平均随访时间为13.8年。两个终点均与所有单收缩期血压指数显著相关(P<.001)。对于夜间收缩压水平,总死亡率的HR为1.23,心血管事件HR为1.36。对于24小时收缩压水平,总死亡率的HR为1.22,心血管事件HR为1.45。对于任何其他收缩压指标的调整,夜间和24小时收缩压与主要结局的相关性仍具有统计学意义(HRs的范围为1.17-1.87),包括单一收缩期血压指数的基础模型得出死亡率AUC为0.83,CV结果为0.84。将24小时或夜间收缩期血压添加到包括其他BP指数的基础模型中,死亡率增加到0.0013%至0.0027%,复合CV结果增加0.0031%至0.0075%。在已经包括夜间或24小时收缩期血压在内的模型中添加任何收缩期血压指数并不能显著改善模型的性能。这些结果与舒张期血压一致。

研究认为,24小时和夜间血压测量值与更高的死亡风险和综合心血管结果显著相关,是估计CV风险的最佳指标。

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    2020-03-20 chengjn
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