阑尾炎(英文)【36页】.pptx

surgeryAcuteAppendicitis1精选可编辑ppt

2精选可编辑ppt

Anatomy3精选可编辑ppt

VariedanatomyLength:5~10cm,narrowlumenhaustraofcolon4精选可编辑ppt

EpidemiologyThemostcommonacuteabdomendiseaseTheincidenceofappendectomyappearstobedecliningduetomoreaccuratepreoperativediagnosis.Despitenewerimagingtechniques,acuteappendicitiscanbeverydifficulttodiagnose.5精选可编辑ppt

PathophisiologySimpleappendicitisSuppurativeappendicitisGangrenousappendicitisPerforatedappendicitisPeritonitisAbscessaroundtheappendixMucoceleofappendix6精选可编辑ppt

PathophysiologyAcuteappendicitisisthoughttobeginwithobstructionofthelumenObstructioncanresultfromfoodmatter,adhesions,orlymphoidhyperplasiaAppendixistwisted,andLumenofappendixisnarrow,resultinobstructionMucosalsecretionscontinuetoincreaseintraluminalpressure7精选可编辑ppt

Etiology1.Theanatomycharacteristics2.Thetissuefeatures3.fecality,foreignbodyobstruction4.Parasitescausethemucosadamage5.adhesion,pressurecauseappendixdistortedObstruction→highpressure→limphobstructed,ischemia→mucosadamage→bacteriainvade（70%～80%）8精选可编辑ppt

ArteryTheappendixarteryhasnobranches,iseasilytobeobstacled9精选可编辑ppt

EtiologyEventuallythepressureexceedscapillaryperfusionpressureandvenousandlymphaticdrainageareobstructed.Withvascularcompromise,epithelialmucosabreaksdownandbacterialinvasionbybowelfloraoccurs.microbes：Ecoli,streptococcus,Pseudomonas,anaerobe10精选可编辑ppt

EtiologyIncreasedpressurealsoleadstoarterialstasisandtissueinfarctionEndresultisperforationandspillageofinfectedappendicealcontentsintotheperitoneum11精选可编辑ppt

PathophysiologyInitialluminaldistentiontriggersvisceralafferentpainfibers,whichenteratthe10ththoracicvertebrallevel.Thispainisgenerallyvagueandpoorlylocalized.Painistypicallyfeltintheperiumbilicalorepigastricarea.12精选可编辑ppt

PathophysiologyAsinflammationcontinues,theserosaandadja