寿命较长的血压与老年人心肌输血减少有关:MyoFit46的见解
Constantin-Cristian Topriceanu1,2,3,4, Matthew Webber1,2, Hunain Shiwani1,2,5
1Unit for Lifelong Health and Ageing at UCL, University College London, United Kingdom. (C.-C.T., M.W., H. Shiwani, F.C., E.M., D.F., M.A.S., J.B., H. Shah, S.D., A.W., R.H.D., N.C., A.D.H., G.C.).
Circulation. Cardiovascular imaging
|December 17, 2025
概括
整个生命中的高血压 (BP),特别是更的升高,与心肌血流 (MBF) 晚年减少有关. 这种MBF的减少与主要不良心血管事件和心脏纤维化风险的增加有关.
科学领域:
- 心血管医学 心血管医学
- 心脏病学 心脏病学
- 老年学是一门学科.
背景情况:
- 血压升高是冠状动脉疾病的重要危险因素.
- 了解血压轨迹对心脏功能的长期影响对于心血管健康至关重要.
- 终身血压模式可能会影响心肌输血和晚年心脏储备.
研究的目的:
- 调查老年人心肌输液与终身静心和放心血压模式和心肌输液之间的联系.
- 确定血压轨迹,包括累积负担和变化速度,如何影响正常化的应激心肌血流 (sMBFN) 和输液储备.
- 探索这些与血压相关的输液变化与主要不良心血管事件 (MACE) 和心脏纤维化之间的关系.
主要方法:
- MyoFit46研究从1946年出生队列 (≈77岁) 招募了前性参与者.
- 用心血管磁共振成像来评估压力 perfusion 和晚期 gadolinium 增强.
- 用混合效应模型分析了终身BP数据 (记录在多个年龄段),以得出BP轨迹,包括度和累积负担.
主要成果:
- 在36-69岁之间较高的缩血压 (SBP) 与在77岁时较低的sMBFN有关.
- 随着时间的推移,持续较高的SBP和更的BP增加与显著减少的sMBF有关.
- 每次SBP升高1 mm Hg/年都会使sMBFN下降2-5%,而不依赖于基线或最终BP.
- 较低的sMBFN与MACE的概率增加有关,并介绍了终身SBP和晚期加多增强之间的联系.
结论:
- 较高的生命周期血压,以更的增加和更大的累积负担为特征,与老年人心肌输液减少有关.
- 这些输液缺陷与重大心血管不良事件和心脏纤维化风险的增加有关.
- 这些发现强调了监测血压轨迹对于早期发现和管理心血管风险的重要性.
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