除了血管接入之外:揭示透析接入流速对心血管的影响
Mohammad Moradmand1, Farzad Dehghani Mahmoudabadi2, Mohammad Javanbakht3
1Department of General Surgery, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Journal of cardiothoracic surgery
|April 18, 2025
概括
血液透析患者的高流动动脉静脉接入显著影响心脏功能,减少射出分数和增加左心室尺寸. 积极的心血管监测至关重要,特别是在高流量接入时,以预防心力衰竭.
科学领域:
- 腎臟病學 (nephrology) 是一種醫學專業.
- 心脏病学 心脏病学
- 血管外科 血管外科
背景情况:
- 血液透析需要可靠的血管接入,通常是动脉静脉 (AVF) 或移植 (AVG).
- 血管接入的血液动力学影响,特别是高流量状态,对心脏功能需要进一步调查.
研究的目的:
- 评估动脉静脉 (AVF) 和动脉静脉移植 (AVG) 流量对血液透析患者的心脏功能和血压的影响.
- 为了比较血管接入创建前后的心血管变化,并区分高流和非高流接入组之间的结果.
主要方法:
- 伊朗德黑兰80名血液透析患者的前性观察研究.
- 通过彩色多普勒超声波测量血管接入流量 (Qa).
- 在基线和干预后6个月评估的心声学参数 (缩血压,喷射率,左心室终端-扩张维度).
主要成果:
- 在访问后,缩血压 (156.48~141.42mmHg) 和射出分数 (57.18%~50.31%) 显著下降.
- 左心室终端透析尺寸显著增加 (4.43至5.51厘米),表明心脏负担.
- 高流量接入与更大的心血管负担相关,表明高输出心力衰竭的风险.
结论:
- 血液透析患者的高流动血管接入对心血管系统造成重大负担,需要保持警的监测.
- 通过例行多普勒超声波和心声回声扫描早期检测高风险患者对于及时干预和预防诸如高输出心力衰竭等并发症至关重要.
相关概念视频
Dialysis
228
Renal failure occurs when the kidneys lose their ability to filter waste products from the blood effectively. It can be classified into two types: acute renal failure (ARF) and chronic renal failure (CRF).
Acute kidney injury develops suddenly and can be caused by pre-renal causes (e.g., hypovolemia, shock), intrinsic renal causes (e.g., acute tubular necrosis), or post-renal causes (e.g., urinary obstruction). In contrast, chronic renal failure progresses gradually over time and is often...
Acute kidney injury develops suddenly and can be caused by pre-renal causes (e.g., hypovolemia, shock), intrinsic renal causes (e.g., acute tubular necrosis), or post-renal causes (e.g., urinary obstruction). In contrast, chronic renal failure progresses gradually over time and is often...
228
Heart Failure Drugs: Diuretics
282
Heart failure and kidney perfusion are interconnected in a complex way. Reduced renal perfusion and venous congestion are two significant factors that contribute to renal dysfunction in heart failure. The kidneys, primarily responsible for fluid balance in the body, are adversely affected due to compromised cardiac output and increased venous pressure. In response to reduced renal perfusion, the kidneys activate neurohumoral mechanisms to restore balance. However, these mechanisms can be...
282
Blood Flow
64.8K
Blood is pumped by the heart into the aorta, the largest artery in the body, and then into increasingly smaller arteries, arterioles, and capillaries. The velocity of blood flow decreases with increased cross-sectional blood vessel area. As blood returns to the heart through venules and veins, its velocity increases. The movement of blood is encouraged by smooth muscle in the vessel walls, the movement of skeletal muscle surrounding the vessels, and one-way valves that prevent backflow.
64.8K
Pathophysiology of Cardiac Performance
486
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...
486
Cardiac Output I:Effect of Heart Rate on Cardiac Output
483
Cardiac Output
Cardiac output (CO) refers to the total amount of blood ejected by one of the ventricles in liters per minute (L/min). In a resting adult, CO ranges from 5 to 6 L/min, adjusting according to the body's metabolic requirements.
Effect of Heart Rate on Cardiac Output
Cardiac output adapts to metabolic demands during stress, physical activity, or illness. The autonomic nervous system regulates heart rate via the sinoatrial node. The parasympathetic nervous system decreases heart...
Cardiac output (CO) refers to the total amount of blood ejected by one of the ventricles in liters per minute (L/min). In a resting adult, CO ranges from 5 to 6 L/min, adjusting according to the body's metabolic requirements.
Effect of Heart Rate on Cardiac Output
Cardiac output adapts to metabolic demands during stress, physical activity, or illness. The autonomic nervous system regulates heart rate via the sinoatrial node. The parasympathetic nervous system decreases heart...
483
Cardiac Output II: Effect of Stroke Volume on Cardiac Output
519
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...
519


