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左心室辅助装置(LVAD)

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ID: ANH14141chis
医学动画文字记录:心脏有四个肌肉泵腔室——右心房、左心房、右心室和左心室。左心室通过大动脉(称为主动脉)将血液泵出,为身体提供所需的氧气和营养物质。在左心衰中,左心室不能向身体泵入足够的血液。左心衰有两种类型,一种是舒张性心衰,左心室不能充分舒张以充满血液;另一种是更常见的收缩性心衰,左心室不能强有力地收缩以将血液输送到身体。在严重的或终末期心力衰竭中,心脏变得越来越虚弱,对药物没有反应。对于左侧终末期收缩性心力衰竭,医生可能会建议使用可植入的左心室辅助装置(LVAD),以帮助心脏向身体泵入足够的血液。左心室辅助装置是一种植入胸腔或腹部的小型机械泵,它取代左心室的工作。血液从左心室通过流入管,再进入泵。泵将血液通过流出管推入主动脉。从这里,血液能正常地从主动脉流向身体的其他部位。一根被称为驱动线的导线将胸腔内的左心室辅助装置泵与位于体外的控制单元连接起来。控制单元是一台小型计算机,它控制泵的功能,并在出现任何问题时向患者发出警报。泵和控制单元通过连接到电池组的电线接收电力。最后,控制单元和电池组被放置在一个很轻的病人个人用品包中。在进行心脏移植之前,左心室辅助装置可能只是一种临时的治疗方法。或者如果患者不能进行心脏移植,可以使用左心室辅助装置进行目标治疗,这是一种长期治疗方案。

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