JAHA:老年人的身体功能和心血管事件风险的关系

2022-09-04 MedSci原创 MedSci原创

在居住在社区的老年人中,身体功能的降低与复合心血管疾病和单个心血管疾病结局的风险独立相关,并在传统风险因素之外改善了他们的风险预测。

身体功能下降,是衰老的一个代表性特征,已明确与心血管疾病(CVD)相关。然而,很少有研究全面调查其与居住在社区的老年人的复合和单个心血管疾病结局之间的关系,以及其对心血管疾病在超越传统危险因素方面的预测价值。

近日,心血管疾病领域权威杂志JAHA上发表了一篇研究文章,研究人员在社区动脉粥样硬化风险(ARIC)研究的第5次随访(2011-2013)中研究了5570名参与者(平均年龄为75岁[标准差为5],女性为58%,黑人占22%)。使用简易体能状况量表(SPPB)评估身体功能,包括行走测试、椅子站立和平衡测试。SPPB评分分为分类建模(低[0-6]、中[7-9]、高[10-12])和连续建模。

研究人员通过多变量Cox模型调整主要CVD危险因素和CVD病史,并评估了SPPB评分与后续复合结局(冠心病、卒中或心力衰竭)和个体CVD结局(复合结局中的单个成分)的关系。研究人员还评估了在合并队列方程中将SPPB加入传统CVD危险因素后C统计的改善情况。

在研究参与者中,13%的参与者SPPB得分低,30%的参与者SPPB得分中等,57%的参与者SPPB得分高。中位随访时间为7.0年(四分位间隔为5.3-7.8年),共发生930例复合CVD事件(386例冠心病、251例卒中和529例心力衰竭)。在调整潜在混杂因素后,复合CVD在低、中、高SPPB评分中的风险比分别为1.47(95%CI为1.20-1.79)和1.25(95%CI为1.07-1.46)。连续SPPB评分显示与每种CVD预后独立相关。这些关联在各亚组中基本保持一致(包括基线时患有心血管疾病的参与者)。在传统CVD危险因素中加入SPPB可显著改善CVD结果的C统计量(例如,对于复合CVD,ΔC‐statistic为0.019[95%CI为0.011-0.027])。

由此可见,在居住在社区的老年人中,身体功能的降低与复合心血管疾病和单个心血管疾病结局的风险独立相关,并在传统风险因素之外改善了他们的风险预测。虽然还需要验证性研究,但该研究的结果表明SPPB对老年人心血管疾病风险分类存在潜在的作用。

原始出处:

Xiao Hu.et al.Physical Function and Subsequent Risk of Cardiovascular Events in Older Adults: The Atherosclerosis Risk in Communities Study.JAHA.2022.https://www.ahajournals.org/doi/full/10.1161/JAHA.121.025780

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    2022-09-05 zhaohui6731
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    2022-09-04 ms5000000518166734

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