血液动力学表明,在左心室辅助器件植入后,患有中风和没有中风的患者之间存在差异
Akshita Sahni1, Sreeparna Majee1, Jay D Pal2
1Department of Mechanical Engineering, University of Colorado Boulder, United States of America.
Computers in biology and medicine
|March 2, 2025
概括
左心室辅助装置 (LVAD) 植入可以导致中风. 这项研究使用数字双胞胎来分析血液流动,在LVAD患者中发现与中风风险相关的独特血液动力学模式.
科学领域:
- 心血管工程 心血管工程
- 医疗成像医学成像
- 计算流体动力学的流体动力学.
背景情况:
- 脑卒中是左心室辅助装置 (LVAD) 患者的主要并发症和死亡原因.
- 了解导致LVAD中风后血动力学因素至关重要,但具有挑战性.
- 植入前血液动力学评估可以帮助预测中风风险.
研究的目的:
- 在使用in silico数字双胞胎的LVAD患者中量化评估血液动力学.
- 为了确定中风患者和没有中风患者之间的血液动力学差异.
- 探索植入前与植入后血动力学比较用于中风风险预测的实用性.
主要方法:
- 使用心脏门CT扫描创建了12名LVAD患者 (6次中风,6次无中风) 的数字双胞胎.
- 重建后植入双胞胎与LVAD外流移植和植入前双胞胎模拟基线流动.
- 使用螺旋流,旋生成和墙壁剪切应力指标分析血液动力学.
主要成果:
- 与没有中风的患者相比,中风患者表现出较高的正螺旋流,旋生成和壁剪应力的平均值.
- 在比较植入前和植入后的流量时,中风患者表现出增加的正螺旋性和减少的旋转性和墙壁剪切.
- 从植入前到植入后的血液动力学变化与中风的结果有关.
结论:
- 在LVAD患者的定量血液动力学分析,包括植入前与植入后的比较,可以揭示中风风险因素.
- 患者特定的数字双胞胎为了解LVAD患者中风病因提供了强大的工具.
- 这种方法对LVAD治疗计划,手术优化和疗效评估有影响.
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