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ID:50672242
大小:8.47 MB
页数:46页
时间:2020-03-14
《液体复苏胶体的地位ppt课件.ppt》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、液体复苏------胶体的地位1---170多年前(1832年),一位苏格兰医师,发现了这种通过静脉血管把药液送入人体的治疗手段……2明胶GELATIN白蛋白ALBUMIN1915WorldWarI1945WorldWarII1960’WarInVietnam右旋糖苷DEXTRAN羟乙基淀粉1943WorldWarII为什么要开发出这些胶体?3重症液体复苏的重要性胶体及其作用目前的争论总结4什么是胶体?胶体(colloid)又称胶状分散体(colloidaldispersion)是一种均匀混合物,在胶体中含有两种不同相态的物质,一种分散,
2、另一种连续。分散的一部分是由微小的粒子或液滴所组成,大小介于1到100纳米之间,且几乎遍布在整个连续相态中。按分散剂的不同可分为:气溶胶(雾、烟、云);固溶胶(水晶、有色玻璃)液溶胶(蛋白溶液,淀粉溶液,肥皂水,人体血液)5人体白蛋白的含量与分布细胞内液细胞外液体液-约占人体体重60%40%组织间液15%血浆5%蛋白质在血浆中含量远远高于组织间液血浆总蛋白含量约为60-80g/L其中,白蛋白含量约为35-50g/L(占血浆总蛋白的60%)Frank-Starling定律7(Multi-)OrganFailureCelldystructio
3、nbyimbalancebetweenO2-supplyandO2-consumptionO2undersupportO2debtMacrocirculatorydysfunctionCOMicrocirculatorydysfunction8Whatelsebesidesvolumerestrictionandexpansion?FluidresuscitationTissueoxygenationCapillaryleakameliorationHemodynamicsClinicaloutocmeRiskofAnaphylaxisE
4、ffectoncoagulationEffectonRenalfunctionJean-LouisVincent,MaxHarryWeil,CritCareMed2006;34:1333–13379IntroductionAcutelyillpatientsfrequentlyrequirefluidrepletion.HypovolemiaExternalloss:bleeding,gastrointestinal,urinarytracts,skinInternalloss:extravasationofblood,exudation
5、/transudationoffluidsRelativeHypovolemia:increasesvenouscapacitanceSepsis,drugsVolumerepletionmaybeessentialtorestorecriticallevelsofcardiacoutputandarterialpressure,resultinginmorenormalperfusionofvitalorgansandtissues.Jean-LouisVincent,MaxHarryWeil,CritCareMed2006;34:13
6、33–133710AcutelyillpatientsfrequentlyrequirefluidrepletionHypovolemia:externalloss&internallossRelativeHypovolemia:increasesvenouscapacitanceVolumerepletionmaybeessentialRestorecriticallevelsofcardiacoutputandarterialpressureMorenormalperfusionofvitalorgansandtissuesJean-
7、LouisVincent,MaxHarryWeil,CritCareMed2006;34:1333–133711IntroductionHemorrhage:Benefit/riskoffluidrepletionmustbeassessedBenefitsofdelayedresuscitationLargevolumeoffluidredcelldeficitoxygendeficitPersistenthypovolemiawillresultinMODSFluidrepletionistypicallymoreeffectiv
8、eduringhypovolemicstatesbutislesseffectiveinlaterstages.Jean-LouisVincent,MaxHarryWeil,CritCareM
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