证据和机制的栓塞性中风在逆侧半球从动脉来源的阴道动脉
Ricardo Roopnarinesingh1, Michelle Leppert2, Debanjan Mukherjee1
1Paul M Rady Department of Mechanical Engineering University of Colorado Boulder Bolder CO.
Journal of the American Heart Association
|November 28, 2023
概括
来自动脉的栓塞可以前往相反的大脑半球,挑战中风起源假设. 较小的栓塞更有可能通过威利斯圆穿过半球.
科学领域:
- 生物医学工程 生物医学工程
- 计算流体动力学的流体动力学.
- 脑血管研究 脑血管研究
背景情况:
- 在栓塞性中风中明确栓塞病变是临床上具有挑战性的.
- 动脉来源,从斑块或手术,是栓性中风的常见来源.
- 虽然假设 ipsilateral 旅行,但报告的是来自动脉源的 contralateral 栓塞事件.
研究的目的:
- 为了研究从动脉来源的栓塞可能前往相对侧脑动脉的可能性.
- 确定威利斯圆圈中的附带血动力学对栓塞运输的影响.
- 为了测试阴道动脉栓塞可以穿越半球的假设.
主要方法:
- 利用患者特定的电脑模型来计算栓-血液动力学相互作用.
- 在四个血管模型,六个威利斯圆形变体和三个栓塞大小的体实验中进行.
- 模拟了144个实验,分析了来自动脉起源的170万个栓塞样本的轨迹.
主要成果:
- 从左侧和右侧动脉来源证明具有统计学意义的 (P < 0.05) 逆侧栓塞传输.
- 观察到一个大小依赖的逆侧运动,较小的栓塞表现出较大的逆侧运动.
- 在威利斯圆圈内确定了附带流道,特别是前后沟通动脉,作为跨半球栓塞运动的途径.
结论:
- 在威利斯圆圈内生成了有限大小的血栓栓塞动态的定量数据.
- 揭示了一个非直观的来源-目的地关系,用于动脉栓塞.
- 证实,源自动脉的栓塞可以通往相对侧脑动脉.
相关概念视频
Arteries of the Head and Neck
1.3K
The human body's intricate network of arteries ensures that every organ system receives the necessary oxygen and nutrients for optimal function. The arterial network in the head and neck region is particularly complex, providing vital blood flow to the brain, eyes, and other critical structures. Prominent arteries in this region include the internal carotid arteries and the vertebral arteries.
The internal carotid arteries supply blood to the anterior portion of the cerebrum. They enter the...
The internal carotid arteries supply blood to the anterior portion of the cerebrum. They enter the...
1.3K
The Arch of Aorta
684
The coronary arteries, originating from the ascending aorta, bifurcate from two sinuses located within the ascending aorta. Positioned just above the aortic semilunar valve, these sinuses house essential aortic baroreceptors and chemoreceptors, crucial for maintaining cardiac function. The left coronary artery and the right coronary artery branch off from the left posterior and anterior aortic sinuses, respectively.
Encircling the heart, the coronary arteries form a ring-like structure before...
Encircling the heart, the coronary arteries form a ring-like structure before...
684


