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Stroke:长期血压变异性与认知衰退之间的剂量反应关系

2021-06-27 MedSci原创 MedSci原创

50岁以上成年人较高的长期血压变异性与认知能力加速下降相关,且呈非线性剂量反应关系。需要进一步的随机对照试验从认知健康的角度评估降低血压变异性策略的潜在益处。

近日,血管疾病领域权威杂志Stroke上发表了一篇研究文章,研究人员旨在评估较高的长期血压变异性是否与认知能力加速下降相关,并评估其潜在的剂量反应关系。

研究人员使用了健康与退休研究和英国老龄化纵向研究的原始调查数据。认知功能的标准化Z评分是主要的结局指标。

研究人员使用访视血压标准差、变异系数和独立于平均值的变异进行分析,并应用线性混合模型和受限样条来评估相关性,且探索剂量反应模式。分段回归用于分析剂量反应关系并估计转折点。研究人员使用随机效应模型进行荟萃分析以汇总结果,I2用于检验异质性。

该研究共纳入了12298名无痴呆的参与者(平均年龄:64.6±8.6岁)。研究人员在血压变异性和认知能力下降之间观察到显著关联。收缩压和舒张压变异系数每增加10%与整体认知能力加速下降0.026 SD/y(95%CI为0.016–0.036, P<0.001)和0.022 SD/y (95%CI为0.017–0.027,P<0.001)相关。研究人员观察到了非线性剂量反应关系(非线性P<0.001),并观察到了明显的转折点(斜率变化P<0.001)。

由此可见,50岁以上成年人较高的长期血压变异性与认知能力加速下降相关,且呈非线性剂量反应关系。需要进一步的随机对照试验从认知健康的角度评估降低血压变异性策略的潜在益处。

原始出处:

Chenglong Li.et al.Dose-Response Relationship Between Long-Term Blood Pressure Variability and Cognitive Decline.stroke.2021.https://www.ahajournals.org/doi/10.1161/STROKEAHA.120.033697

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    2021-06-30 土豆你个马铃薯

    我会听

    0

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    2021-06-28 土豆你个马铃薯

    对的雨我

    0

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    2021-06-28 心介

    #血压变异性#相信未来5年是热点,不仅关心血压高与低,还要关注血压变异性才可以

    0

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    2021-06-27 土豆你个马铃薯

    洗个澡学习

    0

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