拉姆斯中间体与左主干干中的动脉样硬化斑块增加的关联
Leili Pourafkari1, Salman Ansari2, April Kinninger1
1Department of Medicine, Lundquist Institute at Harbor-UCLA Medical Center, Los Angeles, CA, USA.
The international journal of cardiovascular imaging
|February 18, 2026
概括
拉姆斯中间体 (RI) 变种血管与左主冠状动脉 (LM) 中动脉硬化斑块增加和狭窄有关. 这一发现突显了冠状动脉疾病进展的潜在风险因素.
科学领域:
- 心血管成像 - 心血管成像
- 干预心脏病学 干预心脏病学
- 解剖学变种 解剖学变种
背景情况:
- 拉姆斯中间体 (Ramus intermedius,RI) 是一个解剖变体,起源于左主冠状动脉 (LM) 的分叉.
- 在LM中影响冠状动脉血流动力学和动脉样硬化斑块的潜在作用尚未完全理解.
- 了解像RI这样的解剖变异对于评估心血管风险至关重要.
研究的目的:
- 调查Ramus intermedius (RI) 与左主冠状动脉 (LM) 中动脉硬化斑块和狭窄之间的关系.
- 确定RI是否是LM动脉样硬化的一个独立风险因素.
主要方法:
- 对11497名接受计算机断层扫描血管造影 (CTA) 的受试者的回顾性分析.
- 专家对RI存在的评估和LM斑块负担和狭窄的评估.
- 双变量和多变量逻辑回归分析,根据传统的心血管风险因素进行调整.
主要成果:
- 拉姆斯中间体 (RI) 在研究人口的11%中存在.
- 与没有RI的受试者相比,RI受试者表现出任何斑块负担 (41%对26%) 和任何程度的LM狭窄的明显更高的患病率 (41%对26%) 和任何程度的LM狭窄.
- 在调整心血管风险因素后,RI的存在仍然与LM斑块有显著的关联 (OR 1.71 [1.51-1.95]).
结论:
- 解剖学变体Ramus intermedius (RI) 与动脉样硬化斑块的患病率增加和左主冠状动脉 (LM) 中较高程度的狭窄症显著相关.
- RI可能是一个独立的风险因素,有助于LM干中动脉样硬化的发展.
- 需要进一步的研究来阐明这种关联及其临床影响背后的机制.
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