运动员和高血压患者的左心室血动力学力评估的心脏力学差异
Dinara Jumadilova1, Yeltay Rakhmanov1, Nail Khissamutdinov2
1School of Medicine, Nazarbayev University, 010000, Astana, Kazakhstan.
Scientific reports
|November 9, 2024
概括
心脏磁共振衍生的左心室血动力学力 (HDF) 在运动员和高血压患者之间存在显著差异. 这些发现突出了不同的血液动力学模式,有助于区分生理适应和病理变化.
科学领域:
- 心脏病学 心脏病学
- 生物医学工程 生物医学工程
- 运动医学 运动医学
背景情况:
- 运动员由于强烈的训练而表现出独特的心血管适应性.
- 高血压导致心脏血液动力学的显著改变.
- 左心室血动力学力 (HDF) 提供了对心脏功能的详细了解.
研究的目的:
- 为了比较精英运动员和高血压患者之间的心脏磁共振衍生的左心室血动力学力 (HDF).
- 为了确定与运动训练和高血压心脏病相关的特定血液动力学模式.
- 评估HDF在区分生理和病理心脏状态方面的有用性.
主要方法:
- 心脏磁共振成像用于测量整个心脏周期的左心室血动力学力 (HDF).
- 分析了HDF参数,包括缩喷射斜率,缩冲动,弹性反弹,吸力和心房推力.
- 在一个由60名运动员和48名高血压患者组成的队列之间,以及耐力和力量运动员之间进行了统计比较.
主要成果:
- 与高血压患者相比,运动员表现出较高的缩喷射斜率,在早期缩和缩脉冲期间增加的HDF,以及较低的弹性反弹AUC.
- 患有高血压的患者表现出异常的吸力,顶部至底部方向和显著更高的心房推力.
- 强力运动员比耐力运动员表现出更短的缩脉冲持续时间和更高的早期LV填充AUC.
结论:
- 来自心磁共振成像的左心室血动力学力 (HDF) 有效地区分运动员和高血压患者的血动力学特征.
- HDF分析为运动员的独特心血管适应以及高血压病理变化提供了宝贵的见解.
- 这种方法具有非侵入性评估和心脏病状况差异化的潜力.
相关概念视频
Pathophysiology of Cardiac Performance
574
Typical heart performance is influenced by heart rate, rhythm, myocardial contraction, and metabolism or blood flow. The cardiac muscle exhibits distinct electrophysiological features, including pacemaker activity and calcium channel control, which play a vital role in the heart's response to various drugs. The autonomic nervous system, comprising the sympathetic and parasympathetic branches, regulates heart rate. Sympathetic activation increases heart rate, while parasympathetic activation...
574
Imbalances in Cardiac Output
1.3K
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...
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...
1.3K
Special considerations while measuring blood pressure
705
When assessing blood pressure (BP), healthcare professionals must consider various factors and potential unexpected outcomes to ensure accurate readings and provide proper patient care. Adhering to these guidelines is essential to achieving the most reliable results.
Monitoring Both Arms:
Monitoring BP in both arms during the initial assessment is advisable, as the systolic value may differ by five to ten mm Hg between arms. For subsequent BP assessments, use the arm with the higher reading.
Monitoring Both Arms:
Monitoring BP in both arms during the initial assessment is advisable, as the systolic value may differ by five to ten mm Hg between arms. For subsequent BP assessments, use the arm with the higher reading.
705
Exercise and Cardiac Output
926
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...
Sustained exercise increases the muscles' oxygen demand, which can be...
926
Cardiac Output II: Effect of Stroke Volume on Cardiac Output
706
Cardiac output (CO), the amount of blood the heart pumps per minute, is a parameter in cardiovascular physiology determined by stroke volume and heart rate. Stroke volume, the amount of blood pushed from one of the ventricles per heartbeat, is influenced by preload, afterload, and contractility.
Preload
Preload refers to the initial elongation of the cardiac myocytes before contraction and is related to the volume of blood filling the heart at the end of diastole, or end-diastolic volume. The...
Preload
Preload refers to the initial elongation of the cardiac myocytes before contraction and is related to the volume of blood filling the heart at the end of diastole, or end-diastolic volume. The...
706
Pathophysiology of Heart Failure
1.5K
Heart failure (HF) is a progressive syndrome involving ventricles that leads to inadequate cardiac output. It can be classified based on location and output or ejection fraction. Ejection fraction (EF) is an essential measurement in the diagnosis and surveillance of HF. Reduced EF corresponds to systolic heart failure (HFrEF). However, HF with preserved ejection fraction (HFpEF) is becoming increasingly prevalent. Also known as diastolic HF, this form of HF is related to aging. The...
1.5K


