诱导的血解速度调节的轴流左心室辅助装置
Patrick Borchers1, Ailín Österlein Kück1, Steffen Leonhardt1
1Chair for Medical Information Technology, Helmholtz Institute for Biomedical Engineering, RWTH Aachen University, Aachen, Germany.
Artificial organs
|February 17, 2025
概括
左心室辅助装置 (LVAD) 的速度调节对HeartMate2 (HM2) 具有前景,但可能会增加Sputnik1的血液溶解. 在恒定转速模式下,Sputnik1的血液溶解率低于HM2.
科学领域:
- 心血管工程 心血管工程
- 生物医学设备技术 生物医学设备技术
- 血液动力学 血液动力学
背景情况:
- 在连续流动左心室辅助装置 (LVAD) 支持期间,动脉脉动率降低与不良事件有关.
- 速调节是一种增强动脉脉动性的潜在策略.
- 了解速度调节对血液溶解的影响对于LVAD安全至关重要.
研究的目的:
- 为了比较两个轴流LVAD (Sputnik1和HeartMate2) 的常速和调制速度模式之间的引血解.
- 为了评估Sputnik1和HeartMate2LVAD之间的血液溶解性能差异.
主要方法:
- 两个Sputnik1和两个HeartMate2 (HM2) LVAD在自动化血液溶解系统中进行了测试,每种模式6小时.
- 使用矩形图案在70和140bpm时应用速度调制,达到80-120mmHg的头部压力.
- 每小时测量无血血红蛋白水平,以计算修改后的血解指数 (MIH).
主要成果:
- 速度调节在Sputnik1 LVAD中增加了血液溶解 (MIH),但与常速相比,在大多数HeartMate2 (HM2) LVAD中降低了血液溶解.
- 由于调节导致的血液溶解显著差异仅在一个Sputnik1 LVAD中观察到.
- 当Sputnik1 LVAD在恒定速度模式下运行时,其血液溶解水平低于HM2 LVAD.
结论:
- 心脏Mate2 (HM2) LVAD可以在速度调节模式下安全运行,而不会增加血液溶解风险.
- 对于Sputnik1 LVAD,速度调节的好处需要仔细考虑血解增加的可能性.
- 在标准常速模式下,斯普特尼克1 LVADs似乎具有比HM2 LVADs更低的溶血概况.
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