血液透析和腹膜透析的区别

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当发生急性或慢性肾衰竭时，体内会蓄积大量的代谢废物——尿毒症毒素，引起水、电解质紊乱和酸碱失衡，出现一系列临床症状，甚至昏迷，危及生命。这时，需要选择一种适合病人的透析方式来进行肾脏替代治疗，下面简单介绍一下两种常用的透析方式：

血液透析

血液透析是一种较安全、易行、应用广泛的血液净化方法。透析是指溶质通过半透膜，从高浓度溶液向低浓度方向运动。血液透析包括溶质的移动和水的移动，即血液和透析液在透析器(人工肾)内借半透膜接触和浓度梯度进行物质交换，排出体内毒素和过多的水分，纠正水、电解质和酸碱失衡，缓解临床症状，挽救生命。