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血动力学参数 基础的关系 萨科佩尼亚 和 血压恢复 在 站立 的 血压
Eoin Duggan1,2, Silvin P Knight1, Feng Xue1
1Discipline of Medical Gerontology, School of Medicine, Trinity College Dublin, D02 R590 Dublin, Ireland.
萨科佩尼亚会影响站立后的血压恢复,原因是心脏输出量减少和周围阻力变化. 这突显了肌肉质量,心血管功能和与衰老相关的低血压之间的潜在联系.
科学领域:
- 老年学是一门学科.
- 心血管生理学心血管生理学
- 肌肉骨健康 肌肉骨健康
背景情况:
- 随着年龄的增长而导致的肌肉质量损失萨尔科佩尼亚 (Sarcopenia) 与降低血压 (BP) 恢复和正静性低血压 (OH) 相关.
- 这种关联的基础是精确的血液动力学机制仍然不完全理解.
- 了解这些机制对于管理与年龄有关的心血管挑战至关重要.
研究的目的:
- 为了研究血动力学机制,sarcopenia与延迟的BP恢复和老年人正静性低血压的联系.
- 为了区分心脏输出,外周总阻力和中风体积在与肉症相关的血压调节失调中的作用.
主要方法:
- 来自倒/昏迷诊所的107名参与者 (≥50岁) 接受了持续的非侵入性血液动力学监测的活跃站立测试.
- 评估了肌肉质量,握力和椅子站时间,以将参与者分为非sarcopenic或sarcopenic.
- 混合效应线性回归分析了萨科佩尼亚对血压,心脏输出,外周总阻力和站立后的中风体积的影响.
主要成果:
- 萨科佩尼亚与站立后10-20s的平均动脉压恢复减少有关 (β -0.67,p < 0.001).
- 在sarcopenia中观察到心脏输出峰值和恢复的减少 (0-20s) 和减弱的外周总抵抗恢复.
- 在肉症中,中风体积恢复减少,而心率没有显著的关联.
结论:
- 在sarcopenia中损害的BP恢复是由心脏输出峰值的减少和心脏输出和总周围电阻的恢复受损所驱动的.
- 脑中风的数量,而不是心率,似乎是萨尔科佩尼亚心脏输出变化的主要决定因素.
- 潜在的机制包括心脏-sarcopenia,自主功能障碍,以及骨肌肉的作用减少.
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