腎血管變化可能與抗性高血壓有關嗎? 一个单一中心研究
Stefan Naydenov1, Margarita Jekova1, Emil Manov1
1Department of Internal Diseases "Prof. St. Kirkovich", Medical University of Sofia, 1431 Sofia, Bulgaria.
Journal of clinical medicine
|February 26, 2025
概括
血管结构的解剖学变化在高血压患者中很常见. 这些血管异常与耐治疗高血压的发展密切相关,影响患者的治疗结果.
科学领域:
- 血管解剖学 血管解剖学
- 腎臟病學 (nephrology) 是一種醫學.
- 高血压研究 高血压研究
背景情况:
- 先天性血管异常常见,但其临床影响尚未完全理解.
- 动脉高血压 (HTN) 的管理是复杂的,特别是在抗性HTN的情况下.
- 了解血管变异和HTN之间的联系对于改善患者护理至关重要.
研究的目的:
- 为了确定高血压患者血管变异的患病率.
- 调查这些变体与抗性高血压之间的关联.
- 描述解剖性血管异常与耐治疗性HTN之间的关系.
主要方法:
- 选了3762名高血压患者,确定了128名耐药HTN患者,并将他们与128名受控HTN患者匹配.
- 利用对比度增强的计算机断层扫描 (CT) 与再生血管扫描进行详细的脏成像.
- 采用统计分析,包括回归,以评估血管变异和耐药HTN之间的关联.
主要成果:
- 在所有参与者的25% (64/256) 发现了血管变异.
- 与受控HTN患者 (11.7%) 相比,耐药HTN患者显示这些变异的患病率显著更高 (38.3%).
- 在血管变异和耐药HTN之间观察到强烈的关联 (异常比率=4.67).
结论:
- 解剖性血管变异在高血压患者中很常见.
- 这些变异与治疗耐药高血压的发展有显著的关联.
- 识别血管变异可能有助于理解和管理耐药性HTN.
相关概念视频
01:18Hypertension and Regulation of Blood Pressure
1.9K
Hypertension, the most common cardiovascular disease, is diagnosed through repeated measurements of elevated blood pressure. Its risks, including damage to the kidney, heart, and brain, are directly proportional to blood pressure levels. Starting from 115/75 mm Hg, the risk of cardiovascular disease doubles with each increment of 20/10 mm Hg. The diagnosis relies on blood pressure measurements, not on patient symptoms, as hypertension is often asymptomatic until end-organ damage is imminent or...
1.9K
01:25Antihypertensive Drugs: Direct Renin Inhibitors
469
The renin-angiotensin-aldosterone system (RAAS) is an intricate physiological pathway involving numerous enzymes and hormones, including renin, angiotensin-converting enzyme (ACE), angiotensin I and II, and aldosterone. Imbalances within this system increase the production of angiotensin II and aldosterone. Increased angiotensin II levels promote vasoconstriction and blood pressure elevation. Concurrently, higher aldosterone levels stimulate sodium and water reabsorption in the kidneys,...
469
01:20Vascular Resistance
3.2K
Vascular resistance is a critical concept in understanding blood flow dynamics in the circulatory system. It refers to the resistance that blood encounters as it flows through the blood vessels. This resistance is a key factor in determining blood pressure and cardiac workload.
The primary determinants of vascular resistance are vessel diameter, blood viscosity, and vessel length. Among these, vessel diameter plays the most significant role due to the fourth power relationship described by...
The primary determinants of vascular resistance are vessel diameter, blood viscosity, and vessel length. Among these, vessel diameter plays the most significant role due to the fourth power relationship described by...
3.2K
01:33Hormonal Regulation
32.8K
The renin-aldosterone system is an endocrine system which guides the renal absorption of water and electrolytes, thus managing blood pressure and osmoregulation. Activation of the system begins in the kidneys with a small cluster of cells adjacent to the afferent and efferent blood vessels of the renal corpuscle. As the nephrons are filtering blood, juxtaglomerular cells monitor blood pressure. If they detect a decrease in pressure, they release the hormone renin into the bloodstream.
32.8K
01:30Antihypertensive Drugs: Angiotensin-Converting Enzyme Inhibitors
452
Angiotensin-converting enzyme (ACE), a vital component of the renin-angiotensin-aldosterone system, is abundant in lung endothelial cells. ACE converts the inactive decapeptide, angiotensin I, into the active octapeptide, angiotensin II. This potent vasoconstrictor narrows blood vessels, increasing resistance to blood flow and elevating blood pressure. Angiotensin II also stimulates aldosterone production, encouraging kidney cells to reabsorb more sodium and water from urine, thereby increasing...
452
01:30Antihypertensive Drugs: Angiotensin II Receptor Blockers
568
In the renin-angiotensin-aldosterone system, a hormone called angiotensin II plays a crucial role. It binds to the AT1 receptors in vascular smooth muscles coupled with Gq proteins. The activation of these receptors activates an enzyme called phospholipase C, which releases two molecules: inositol trisphosphate and diacylglycerol. These molecules cause a chain reaction that leads to the phosphorylation of myosin light chains and promotes interaction between actin and myosin, leading to smooth...
568