血液透析机报警操作.ppt
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1、一:相关医学和技术基础二:血透机组成及作用三:相关报警及处理,Diffusion弥散,Start开始时:DifferentConcentrations膜两侧浓度有差别,End结束时:EqualConcentrations膜两侧浓度相同,time,Diffusion is a consequence of the random movementof all molecules(Brownian Movement).弥散是微分子物质随机的运动可导致均匀分布的结果,Ultrafiltration超滤,TimePressure,Start:,End:,Exertion of pressure on o
2、ne side of the membrane produces filtration of water with solutes,as long as they can pass the membrane.运用压力的作用将水份从膜一侧推到另一侧,膜孔够大时溶质也可以被挤出,Osmosis渗透作用,Time,Contrary to diffusion the dissolved particles cannot pass through the membrane,nevertheless the concentrations tend to equal out,thus water passe
3、s through the membrane.与弥散作用相反,当溶质不能通过膜孔时发生的水由溶质密度小的一侧渗透到溶质密度大的一侧的情况而使两侧密度趋于相同的情况叫做水的渗透作用。,Reverse Osmosis反渗透作用,Time&Pressure时间和压力,Similar to ultrafiltration pressure is applied to one side of the membrane.Reverse osmosis is especially important for the purification of water for the production of di
4、alysate.类似于超滤靠压力作用于膜的一侧,反渗是生产透析用的纯净水的重要方法。,HF,B,HD,B,D,B,D,HDF,mmHg,B,B,D,low-flux低通透析器,high-flux高通透析器,high-flux高通透析器,diffusion,convectionadsorption,diffusion/convectionadsorption,Therapy types治疗模式,Hemodialysis血液透析,Hemofiltration血液滤过,Hemodiafiltration血液透析滤过,弥散原理,对流吸附,弥散对流吸附,Hemodialysis血液透析Diffusive
5、 metabolic transport through semi-permeable membranes with balance of a concentration difference between blood and dialysis fluid.利用血液和透析液中溶质的浓度差别使溶质在弥散作用下通过半透膜随透析液排出Small molecular substances will essentially more effective.小分子物质可有效的被清除Hemofiltration血液透析滤过Soluble substances are swept along in a flu
6、id stream through high permeable membranes(convection).The convection depends on the transmembrane pressure and on membrane features like size,density,and quality of the pores(cut-off-value“).可溶物质随着通过高通透性半透膜的液体流动而被清除(对流)。对流依靠跨膜压和膜的物理性质(面积、密度、质量、孔径)来实现。High moleculare substances,as long as they are b
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- 血液 透析 报警 操作
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