文档介绍：该【肠系膜血栓课件 】是由【非学无以广才】上传分享，文档一共【43】页，该文档可以免费在线阅读，需要了解更多关于【肠系膜血栓课件 】的内容，可以使用淘豆网的站内搜索功能，选择自己适合的文档，以下文字是截取该文章内的部分文字，如需要获得完整电子版，请下载此文档到您的设备，方便您编辑和打印。GeneralviewsThrombosisistheformationofaclotorthrombusinsideabloodvesselInjurytothevessel'swall(trauma,infection,scleroticlesion)(icdeficienciesorautoimmunedisorders,DM,tumor).*肠系膜血栓课件*Classification2distinctformsVenousthrombosisDeepvenousthrombosis(withorwithoutpulmonaryembolism)Portalveinthrombosis(SMV,IMV)RenalveinthrombosisHepaticveinthrombosis(Budd-Chiarisyndrome)Paget-Schroetterdisease(upperextremityvein)CerebralvenoussinusthrombosisThoracicoutletsyndrome(SubclavianVeinThrombosisunrelatedtotrauma)Arterialthrombosis*肠系膜血栓课件*2distinctformsVenousthrombosisArterialthrombosisStroke(eitherthromboticorembolic)Myocardialinfarction(usuallycoronarythrombosisduetoruptureofanatheroscleroticplaque)Thoracicoutletsyndrome(mayprecipitatearterialthrombosisaswellasvenous)*肠系膜血栓课件*肠系膜上静脉(SMV)血栓形成是指沿SMV主干的血栓形成及其蔓延,这是一种临床上较少见的急腹症。绝大部分病例仅靠剖腹探查得以明确诊断,病死率高达20%~50%。原发或继发性肠系膜上静脉血栓约占肠系膜静脉血栓95%,约占肠道缺血事件中5-15%。*肠系膜血栓课件*IMVSplenicveinSMVPVThepancreasandduodenumfrombehind*肠系膜血栓课件**肠系膜血栓课件*经胰钩突层面(CT增强扫描)(箭头所示))*肠系膜血栓课件*经肠系膜上动脉层面(CT增强扫描)(箭头所示)*肠系膜血栓课件*①肝硬变或肝外压迫引起PV充血和血流郁滞;②腹腔内化脓性感染,如坏疽性阑尾炎、溃疡性结肠炎、绞窄性疝等;③高凝状态:血液异常(如真红)、口服避孕药、DM、肿瘤、肾病综合症、风湿性疾病等;④腹部外伤或手术损伤;⑤约1/4无明显诱因,称为原发性。Etiology--SMVT的病因学*肠系膜血栓课件*Pathophysiology--SMVT血栓的形成与延伸:由SMV主干向远端延伸,小肠系膜静脉的血栓向SMV主干蔓延;受累肠曲静脉回流受阻时,肠管充血水肿,浆膜下先点状出血,后扩散成片;肠壁和肠系膜增厚、水肿,继之肠曲发生出血性梗死,呈暗紫色;大量血性液体从肠壁和肠系膜渗出至肠腔和腹腔;*肠系膜血栓课件*