新版寄生虫肺吸虫

paragonimusTypicalcharacterFemalegenitalsystem:Ovaryandwombareatthesamelevelonmidline

Malegenitalsystem:TestesarelocatedatthejunctionoftheposteriorfourthofthebodyThemainparasiteincluding:Paragonimuswestermani2.Paragonimusskrjabini3.ParagonimusheterotremusParagonimuswestermaniOralsuckerVetralsuckerCecumUterusOvaryTestesExcretorybladder1.adultMorphology2.Egg卵盖operculum卵壳eggshell卵细胞ovotid卵黄细胞yolkcellEggoperculumovotidyolkcellLivecycleAdulteggEggspassintowaterinfecesmiracidiumsporocystcercariaAllthesestagearegrowedinthesnailleavesnailandareeatedBycrabmetacercariaManisinfectivebyeatingtherawcrab.wormWormmovethroughTheinternalorgansadultWorm’smovingway:SmallintestineAbdominalcavityThoraciccavityLungPassthediaphragmaticsurfaceArehatchedintheduodenumMelaniaCrabCrayfishAttention:1.EctopicparasitismSubcutaneous,liver,brain,spinalcord,eye…..Transporthost:

Someparasiteworminvadeabnormalhost,itcannotbecomeadult,itmaintainthewormstage,butwhenithaschancetoinvadenormalhostitbecomeadult,theabnormalhostcalledit.Pathogenesisandclinicalmanifestation1.Acuteperiod(causebyyoungworm)Theyoungworm’sactivitycausethepartialtissueandorgandamaged,bleed,inflamation,thedamagedareabecameaholeandthenleadtothetissueibous,adhesions,particularlytheliver.2.ChronicperiodPathogenesisinlungTheadult’smechanicalspoilAnditssecretionandexcretioninflammationabscesscystWhentheadultdieormoveOtherplaceorthecontentRemoveorbsorbedGranulationtissueformedfibrousClinicalsymptomThepatientfeelchestdiscomfortcough,hemoptysis(咳血)

,Sputumisbrown-flake,EggisoftenfoundinthesputumB.EctopicparasitismSubcutaneous---cystsintheskinBrain---braindiscomfort,epilepsy(癫痫),

paralysis(瘫痪)Spinalcord---paresisEye---losesightorvisiondisorderPeritoneum(腹膜)---abdominalpain,diarrhea,blood-stood,enlargingliverLung’symptomBrain-spinalcord’spatientPeritoneumSubcutaneousDiagnosisMakesurewhetherthepatienthasthehabitofeatingtherawcrab1.ExaminationUsethewatersedimentationmethodtofindtheegginthefecesUsethedirectsmearmethodtofindtheegginthesputum2.X-ray,CTforthepleuraandbrain-spinalcord’spatient3.ImmuniologyexaminationFortheectopicparasitismMethod:AST,ELISA,AST-ELISAEpidemiologyCharcteristic:parasiticzoonosesParagonimiasisinfectthewileanimalinthenature,whenhumanbeingcomeintotheareahewillbeinfect.ParagonimiasishadevertakenplaceinJapan,Korea,RussiaEpidimiologyfactors:1.Infectivesource:A.Wildanimal:fox,wolf,leopard,cat,dogetc.B.Humanbeing2.Intermediatehost:Thesnailorthecrabwhichgrowinthesmallstream.3.Infectiveway:Eattherawcrabor“drunkcrab”B.EattherawmeatoftransporthostC.DrinktheunboilingwaterTreatmentPayattentiontotheeatinghabit,nottoeattherawcrab,nottodrinktheunboilingwater2.Treatthepatient:PraziquantelAlbendazoleTribendimidineArtemetherArtesunateParagonimusskrjabiniMorphology1.AdultShape:OliveSucker:VentralsuckerislargerthanoralsuckerTestesandovaryhavemorelobation2.Egg:

SimilartoparagonimuswestermuniLivecycleEssentialsimilartoparagonimuswestermuniThedifferentfromitisthat:1.Definitivehost:fruit-eatingfox(themain)Human:Abnormalhost,onlyyoungworminfectthem.2.TheNo.1intermediatehost:ThesnailwhichgrowinthesmallstreamTriculaspp

(拟钉螺）Pathogenesisandclinicalmanifestations:Larvamigrans:someparasiteinvadehumanbeing,humanisnotthenormalhost,itonlystayinthestageofyoungworm,theyoungwormparasteandmigrationinthebodyforalongtime,atlastitcauseparticularandpeneralpathologicchange.Clinicalsymptom:1.Subcutaneoustype:cystsArea:backandabdomen,fourlimbs,inguinalregion(腹股沟区