运动诱导的额头回对左心室缩功能障碍患者的运动中风体积和运动能力的贡献
Rigobert Lapu-Bula1, Annie Robert, David Van Craeynest
1Division of Cardiology, Université Catholique de Louvain, Brussels, Belgium.
Circulation
|September 11, 2002
概括
在心力衰竭患者中,左心室 (LV) 功能障碍,在运动期间功能性腹 (MR) 恶化限制了中风体积的适应. 这有助于减少这些人的运动能力.
科学领域:
- 心脏病学 心脏病学
- 心脏衰竭研究研究
- 运动生理学 运动生理学
背景情况:
- 功能性腹反 (MR) 在心力衰竭 (HF) 患有左心室 (LV) 功能障碍的患者中很普遍.
- MR 严重程度可以动态变化,受负载条件的影响.
研究的目的:
- 为了调查运动引起的MR严重性变化是否会影响运动期间的中风体积反应.
- 为了确定MR严重程度变化对LV功能障碍患者运动能力的影响.
主要方法:
- 25 患有 LV 功能障碍的高血压患者进行不同强度的自行车运动 (30%,60%,90%的峰值 VO2).
- 同时测量包括右心脏压力,心脏输出,VO2和MR严重程度 (MR喷气/左心房面积比).
- 分析了MR严重性变化和血液动力学/功能性参数之间的相关性.
主要成果:
- 在运动期间,MR的严重程度显著增加 (15±8%至33±15%).
- 峰值VO2,中风体积变化和毛细血管压变化与MR严重性变化相关 (r=-0.55, -0.87, 0.62;P<0.01).
- 严重程度的MR变化也与LV球状度指数和合距离相关.
结论:
- 运动诱导的MR严重程度的增加,限制了体力运动期间的中风体积适应.
- 运动期间功能性MR恶化是LV功能障碍患者运动不耐受的一个因素.
更多相关视频
04:20Integration of Brain Tissue Saturation Monitoring in Cardiopulmonary Exercise Testing in Patients with Heart Failure
Published on: October 1, 2019
04:43Investigating the Effect of Different Types of Exercise on Upper Limb Functional Recovery in Patients with Right Hemisphere Damage Based on fNIRS
Published on: February 9, 2024
相关概念视频
Exercise and Cardiac Output
Regular physical activity is essential for maintaining cardiovascular health, with aerobic exercises being particularly effective. According to the American Heart Association, 150 minutes of moderate to intense aerobic exercise per week is recommended for a healthy heart. Aerobic activities may include brisk walking, running, bicycling, cross-country skiing, and swimming, ideally performed three to five times per week.
Sustained exercise increases the muscles' oxygen demand, which can be met...
Sustained exercise increases the muscles' oxygen demand, which can be met...
Imbalances in Cardiac Output
The heart's primary function is to pump blood throughout the body, maintaining a balance between blood sent out (cardiac output) and blood returning (venous return). If this balance is disrupted, it can result in congestive heart failure (CHF), a severe condition where the heart becomes an inefficient pump, leading to inadequate blood circulation.
CHF can occur due to the failure of either side of the heart. Left-side failure leads to pulmonary congestion—the right side continues to send blood...
CHF can occur due to the failure of either side of the heart. Left-side failure leads to pulmonary congestion—the right side continues to send blood...
Exercise and Cardiovascular Response
Exercise significantly impacts cardiovascular response, which is crucial for understanding patient health and designing effective treatment plans.
Light to moderate physical activity initiates a series of interconnected responses in the body. The heart rate modestly increases in anticipation of the workout, followed by widespread vasodilation as oxygen consumption by skeletal muscles increases. This results in decreased peripheral resistance, increased capillary blood flow, and accelerated...
Light to moderate physical activity initiates a series of interconnected responses in the body. The heart rate modestly increases in anticipation of the workout, followed by widespread vasodilation as oxygen consumption by skeletal muscles increases. This results in decreased peripheral resistance, increased capillary blood flow, and accelerated...
