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系统性心室辅助对失败的Fontan患者的影响:使用计算模型进行理论分析

Eiri Kisamori¹, Yasuhiro Kotani², Toshiaki Shishido³

¹Department of Cardiovascular Surgery, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences and Okayama University Hospital, 2-5-1 Shikatacho, Kitaku, Okayama, 700-8558, Japan.

The journal of physiological sciences : JPS

|November 3, 2024

概括

系统性心室辅助装置 (VAD) 可以改善心脏功能障碍或门问题的Fontan患者的血液动力学. 然而,VADs可能在高肺血管抵抗的Fontan患者中无效.

科学领域:

心脏病学心脏病学
生物医学工程生物医学工程
计算机建模计算建模

背景情况:

与Fontan相关的心力衰竭带来复杂的血液动力学挑战.
机械循环支持,特别是心室辅助装置 (VADs),正在作为治疗选择进行探索.

研究的目的:

理论分析系统VAD对失败的Fontan患者血液动力学的影响,使用计算模型.
为了确定系统VAD在Fontan循环中的不同病理生理条件中的有效性.

主要方法:

采用了结合心室时间变化的弹性和血管系统修改的Windkessel模型的计算模型.
在模型中模拟系统VAD作为非线性函数.
评估了静脉动脉功能障碍 (VAD) 的效应,包括静脉/透气心室功能障碍,心室回和高肺血管抵抗的模型.

主要成果:

系统性VAD改善了心脏指数,并降低了心室功能障碍和心房回的模型中的中枢静脉压力 (CVP).
在高肺血管阻力 (PVR) 模型中,当肺血管阻力指数 (PVRI) 超过5木单位m2时,VAD导致极高的CVP (>15 mmHg) 维持心脏指数.
系统性VAD在特定的Fontan并发症中显示出血液动力学益处,但在严重的肺高血压下显示出局限性.

结论:

系统性VAD在改善Fontan患者的血液动力学方面是有效的,这些患者经历了心室功能障碍或心房回.
对于PVRI大于5木单位m2的Fontan患者,全身VAD似乎无效,这突显了肺血管抵抗的关键作用.

关键词:

失败的丰田没有失败血液动力学模拟一次性参数模型.腹腔室辅助器件是一种器械.

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