左心室辅助装置故障:它不仅仅是
Robert L Kormos1, Michael McCall2, Andrew Althouse2
1From Heart and Vascular Institute (R.L.K., A.A., L.L., C.S., J.J.T.); Artificial Heart Program (M.C., R.S., K.L., N.K., E.D.), University of Pittsburgh Medical Center, PA; Department of Bioengineering, Rochester Institute of Technology, NY (M.A.K.); and Department of Engineering, University of Pittsburgh, PA (J.A.Z.). kormosrl@upmc.edu.
Circulation
|July 5, 2017
概括
左心室辅助器件 (LVAD) 的故障超出了血栓,控制器和外围器件的故障更为常见. 不同的LVAD模型表现出不同的组件故障率,影响设备的可靠性.
科学领域:
- 心脏病学
- 生物医学工程
- 医疗器械
背景情况:
- 左心室辅助器件 (LVAD) 的故障通常归因于血栓.
- 然而,LVAD包括,传动线和外围设备,所有这些都容易发生故障.
研究的目的:
- 分析旋转式LVAD中设备故障的发生率和类型.
- 将不同组件和LVAD模型的故障率进行比较.
主要方法:
- 对108种Heartmate II (HM II) 和105种HeartWare VAD (HVAD) 植入物的前性数据进行了审查.
- 设备故障按组件 (控制器,外围设备,/驱动器) 分类,并使用Cox比例危险模型进行分析.
- 每 1000 个患者日计算出失效率.
主要成果:
- 控制器 (30%),电池 (19%) 和患者电缆 (14%) 的故障比的故障更频繁 (13%).
- 与HeartWare VAD (3.06/1000患者日) 相比,Heartmate II设备的整体故障率较高.
- 而HeartWare VAD则表现出优异的传动系统完整性.
结论:
- 设备故障包括比之前强调的更广泛的组件故障.
- 设备故障的发生率和性质主要取决于LVAD的类型.
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