探索年龄对微血管功能的影响:来自冠状动脉微血管疾病注册的见解
Abdullah Al Qaraghuli1, Kalyan R Chitturi2, Sant Kumar3
1Department of Internal Medicine, MedStar Washington Hospital Center, Washington, DC, USA.
International journal of cardiology
|September 4, 2025
概括
在没有阻塞性冠状动脉疾病 (ANOCA) 的心痛患者中,年龄的增长与冠状动脉流量储量 (CFR) 的减少有关. 然而,年龄对冠状动脉微血管功能障碍 (CMD) 或相关指标的患病率没有显著影响.
科学领域:
- 心血管医学
- 临床心脏病学
- 微血管生理学
背景情况:
- 冠状动脉微血管功能障碍 (CMD) 是无阻塞性冠状动脉疾病 (ANOCA) 的心痛的一个关键因素.
- 衰老对冠状动脉微血管功能的影响尚不清楚.
- 研究与年龄相关的微血管功能变化对于理解ANOCA至关重要.
研究的目的:
- 研究患者年龄与冠状动脉微血管功能之间的关系.
- 评估不同年龄段受微血管功能参数的影响.
- 确定年龄的增加是否影响CMD的流行.
主要方法:
- 从冠状动脉微血管疾病登记处 (CMDR) 分析了304名患者.
- 使用玻尿酸热稀释进行侵入性微血管评估,以测量冠状动脉流量储量 (CFR),微循环阻力指数 (IMR) 和微血管阻力储量 (MRR).
- 患者分为三个年龄组:< 50,50-65岁和> 65岁.
主要成果:
- 随着年龄的增长,冠状动脉流量储备 (CFR) 显著下降 (p < 0. 05).
- 在所有年龄组中,冠状动脉微血管功能障碍 (CMD) 的患病率相似 (p = 0. 16).
- 在年龄组中,没有观察到微循环阻力 (IMR) 或微血管阻力储备 (MRR) 的显著差异.
结论:
- 虽然冠状动脉流量储备随着年龄的增长而下降,但年龄的增加并没有显著改变ANOCA患者的CMD患病率.
- 在这一群体中,关键的微血管参数如IMR和MRR不受年龄的显著影响.
- 这些发现表明,除了年龄之外的其他因素可能对ANOCA中CMD的发展更为关键.
相关概念视频
01:21Peripheral Arterial Disease II: Clinical Manifestations and Diagnostic Evaluation
33
Clinical manifestationsPeripheral Arterial Disease (PAD) manifests through a range of symptoms, from the characteristic intermittent claudication to atypical presentations and severe complications in advanced stages. Intermittent claudication, a hallmark symptom of PAD, presents as exercise-induced muscle pain that typically resolves within minutes of rest. This pain is reproducible and stems from inadequate blood flow, leading to the accumulation of lactic acid produced during anaerobic...
33
01:19The Effect of Aging on Tissues
2.4K
Several body functions deteriorate with age. The external signs of aging are easily identifiable. For example, the skin becomes dry, less elastic, and thins out, forming wrinkles. The skin of the face begins to appear looser due to a decrease in the levels of elastic and collagen fibers in the connective tissue. Additionally, melanin production in the hair follicle decreases with age, resulting in gray hair. Moreover, the senses of sight and hearing decline, so glasses and hearing aids may...
2.4K
01:26Coronary Artery Disease II: Pathophysiology
33
Coronary Artery Disease (CAD) originates from a series of events that impair the function of coronary arteries, the blood vessels responsible for delivering oxygen-rich blood to the heart muscle. The pathophysiology of CAD is closely linked to atherosclerosis, a chronic inflammatory and lipid-driven condition affecting the vascular endothelium.1. Endothelial DamageThe process begins with damage to the vascular endothelium, which serves as a protective barrier between the blood and the vessel...
33
01:30Coronary Artery Disease I: Introduction
54
Coronary Artery Disease (CAD): An Overview with Scientific InsightsCoronary Artery Disease (CAD), often referred to as C-A-D, is a prevalent blood vessel disorder classified under the broader category of atherosclerosis. Atherosclerosis is a pathological process characterized by the hardening and narrowing of arteries due to the accumulation of atherosclerotic plaques. These plaques are composed of cholesterol, fatty substances, inflammatory cells, calcium, and fibrin, reducing blood flow to...
54
01:30Coronary Artery Disease III: Clinical Manifestations
31
Coronary Artery Disease (CAD) is a primary health risk worldwide, leading to significant morbidity and mortality. The condition arises from the buildup of atherosclerotic plaques within the coronary arteries, resulting in diminished blood supply to the heart muscle.The clinical manifestations of CAD vary widely, from asymptomatic stages to severe, life-threatening conditions. Understanding these manifestations is crucial for early diagnosis and effective management.Angina Pectoris: The Warning...
31
01:30Peripheral Artery Disease I: Introduction
32
Peripheral artery disease (PAD) predominantly results from atherosclerosis, which involves the accumulation of fatty deposits, or plaques, within the walls of arteries. This causes them to narrow and harden, significantly reducing blood flow. PAD predominantly affects the legs, particularly the arteries supplying the thighs and calves. In rare cases, it may involve other arteries, including those in the arms.Etiology of PAD:The principal cause of PAD is atherosclerosis, which results from fatty...
32