醫(yī)學(xué)寄生蟲學(xué)：Enterobius vermicularis 蠕形住腸線蟲

1、總論、線蟲概論、蛔蟲、鉤蟲、鞭蟲蟯蟲、旋毛蟲、絲蟲、吸蟲概論、肝吸蟲腸吸蟲、肺吸蟲、血吸蟲絳蟲概論、豬帶絳蟲、牛帶絳蟲、細(xì)粒棘球絳蟲、曼氏迭宮絳蟲原蟲概論、溶組織內(nèi)阿米巴、藍(lán)氏賈第鞭毛蟲杜氏利什曼原蟲、弓形蟲、陰道毛滴蟲瘧原蟲、隱孢子蟲醫(yī)學(xué)節(jié)肢動(dòng)物醫(yī)學(xué)寄生蟲學(xué)2Framework based learning Morphology Life cyclePathogenesis and clinical manifestationImmunity DiagnosisEpidemiology Prevention and treatment .How many stages of the life

2、 cycle?Which stage is infective stage? And how?Which stage inhabit humans? And where?Which stage is primary cause of the disease?Which stage was detected for diagnosis?Enterobius vermicularis 蠕形住腸線蟲 OutlineBrief introductionMorphology Life cycleKey points of life cyclePathogenesis and manifestations

3、Laboratory diagnosisEpidemiologyTreatment and preventionBrief introductionEnterobius vermicularis： pinwormUbiquitous Adult : human colon enterobiasis（蟯蟲病）One of the most prevalent gastrointestinal nematodesMost prevalent in families and in institutionalized children. Morphology 1. Adultpin-like ， wh

4、ite colorcephalic alae頭翼 esophageal bulb咽管球：8-13mm Double reproductive system in female. ：2-5mm Morphology 50-60 m 20-32 m ShellA larva contained light and can drift in the air 2 egg Life cycleAdult 2-4w(cecum, colon)male and female copulate (male dead) females outside the anus at nightOviposition (

5、perianal folds ) 34-36 6hmoisture90-100% infective eggs IngestionKey points of life cycleSimplesite of inhabitation: cecum and colon life span of female adults: 1-2 monthsEggs deposited onlyinfective stage: embryonated egginfective route: by mouthSource of infection: Self-infection: anus - hands - m

6、outh Person-to-person transmissionPathogenesis and ManifestationsItching Gastrointestinal symptomsEctopic lesionsAdult Pinworms on the perianal SkinEctopic parasitismMigration into rectum(直腸), urethra（尿道）or vagina（ 陰道） inflammation inEnterobius in the lumen of appendixUrogenital system （泌尿生殖系統(tǒng)炎） Pel

7、vic inflammation (盆腔炎)Appendicitis （闌尾炎）Asthma （哮喘）異位寄生Laboratory diagnosisScotch tape test:透明膠紙法performed for three consecutive mornings：90%. Anal swabs棉簽拭子法EpidemiologyPrevalence: associated with temperate climate. Worldwide distribution： 200 million. More common in white than colored people and more prevalent in children than adults. It is an urban disease of children in crowded environment (schools,kidgartens, etc.). anushandmouthCockroache-reservoir? Treatment and controlTreatment: Abendazole阿苯米唑100200mg， 隔周