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新生儿双流体管的流体流量分析用于有毒的体外膜氧化
Danielle M Sawka1, Yunxing Su2, Julie Monteagudo3
1The Warren Alpert Medical School of Brown University, 70 Ship Street Box G-9486, Providence, RI 02903.
Journal of biomechanical engineering
|December 10, 2023
概括
这项研究实验性地测量了新生儿外体膜氧化 (ECMO) 双光 (DLCs) 中的液体流量. 双13 Fr DLC模型显示,由于剪切应力导致的血液溶解风险最高.
科学领域:
- 生物医学工程 生物医学工程
- 流体动力学 流体动力学
- 新生儿医学 新生儿医学
背景情况:
- 血液溶解是新生儿体外膜氧化 (ECMO) 的重要并发症.
- 管诱导的剪切应力是血液溶解的主要原因.
- 缺乏关于内部管流体动态的实验数据.
研究的目的:
- 通过实验测量新生儿ECMO双光 (DLCs) 中的流体流量和剪切应力.
- 量化与不同DLC设计和尺寸相关的血液溶解风险.
- 提供数据,以提高ECMO管安全性.
主要方法:
- 3D打印了四个新生儿DLC的缩放,清晰的模型 (心房和双,13 Fr和16 Fr).
- 粒子图像速度测量 (PIV) 用于可视化二维流体流动.
- 经验建模以估计基于剪切应力和暴露时间的血液溶解.
主要成果:
- 最大峰值切割应力为16±2Pa,用双式13 Fr模型进行测量.
- 比卡瓦尔13 Fr DLC在5天内显示出预测最高的血液溶解积累.
- 不同的流速下没有观察到血液溶解的显著差异.
结论:
- 双13 Fr DLC设计在新生儿ECMO中构成最大的血液溶解风险.
- 实验性流体动力学数据可以为更安全的ECMO管设计提供信息.
- 需要工程和临床干预来缓解DLC诱导的血液溶解.
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