在血液动力学性能中,全弧替换与半弧替换相比:模拟研究
Yike Shi1, Chenjia Zhang1, Yawei Zhao1
1Department of Biomedical Engineering, College of Artificial Intelligence, Taiyuan University of Technology, Taiyuan, Shanxi, China.
International journal for numerical methods in biomedical engineering
|February 20, 2025
概括
门置换 (HAR) 增加了伪动脉瘤风险,而全门置换 (TAR) 在急性A型大动脉剖析手术后增加了肢体和大脑缺血的风险. 个性化的in silico分析指导了更好的患者管理.
科学领域:
- 心血管外科心血管外科
- 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.
背景情况:
- 急性A型大动脉解剖 (ATAAD) 是一种具有高死亡率的危急疾病.
- 整形门置换 (HAR) 和整形门置换 (TAR) 是ATAAD的标准手术治疗方法.
- 讨论HAR与TAR的长期结果,可能是由于多中心研究中的混临床因素.
研究的目的:
- 为了评估HAR和TAR对ATAAD的长期结果,使用in silico分析.
- 通过使用计算建模来减轻临床因素的影响.
- 为了比较HAR和TAR模拟之间的血液动力学和壁应答参数.
主要方法:
- 重建了个性化的计算模型来模拟HAR和TAR程序.
- 替代区域的材料特性被改变以模仿手术干预.
- 进行了双向流体结构相互作用分析,以获得血液动力学和壁反应参数.
主要成果:
- 与全弓替换 (TAR) (2.42 倍正常) 相比,直弓替换 (HAR) 显示了·米塞斯应激在解位的显著增加 (4.39 倍正常).
- TAR 模拟表明门分支中更严重的流线缺失,这表明潜在的间歇性血液流向大脑和上肢.
- 哈尔模拟结果表明,瘤形成的风险增加在瘤形成.
结论:
- 脊柱支架替换 (HAR) 构成了在解位形成伪动脉瘤的更高风险.
- 整体门置换 (TAR) 与上肢和大脑缺血的风险增加有关.
- 建议对接受HAR和TAR治疗的患者进行加强的术后监测和警,以预防并发症和改善生活质量.
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