基于单轴拉伸试验的中年和老年人大动脉的最终机械性能研究
Hongbing Chen1,2,3, Minzhu Zhao1,2,3, Yongguo Li1,2,3
1Department of Forensic Medicine, College of Basic Medicine, Chongqing Medical University, Chongqing, China.
Frontiers in bioengineering and biotechnology
|April 5, 2024
概括
这项研究揭示了年龄,性别和动脉样硬化如何影响大动脉机械特性和厚度. 大动脉动脉样硬化在男性中更严重,机械强度随着年龄的增长而下降.
科学领域:
- 生物医学工程 生物医学工程
- 心血管研究研究心血管研究
- 材料科学 材料科学 材料科学
背景情况:
- 大动脉的机械性质对于理解大动脉疾病和损伤至关重要.
- 基本的生物力学数据对于临床和法医调查至关重要.
研究的目的:
- 研究年龄,性别,解剖位置,测试方向和病理特征对大动脉机械性质和厚度的影响.
- 分析大动脉动脉样硬化的分布和严重程度.
主要方法:
- 从54-88岁的个人收集了24个动脉.
- 准备了174个狗骨形样本进行单轴拉伸试验.
- 进行了用于病理分组的组织学染色.
主要成果:
- 动脉样硬化的严重程度从大动脉门增加到腹部大动脉,在男性中更为明显.
- 大动脉厚度在男性中较大,并且从上升到腹部大动脉下降.
- 机械性能通常随着年龄的增长而下降,根据性别和动脉样硬化存在的变化,并表现出异构性 (周长>轴).
结论:
- 系统地分析了影响大动脉生物力学和厚度的因素.
- 特征性大动脉动脉样硬化分布和厚度变化.
- 为生物力学分析提供了对病理特征分组的新见解.
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