临床医学传染病学ppt课件肠绦虫病

医学课件园 ,肠绦虫病,Intestinal Taeniasis,医学课件园 ,病原学,猪肉绦虫 Taenia solium 牛肉绦虫 Taenia saginata 短膜壳绦虫 Hymenolepis nana 长膜壳绦虫 Hymenolepis diminuta 阔节裂头绦虫 Diphyllobothrium latum 犬复孔绦虫 Dipylidium caninum,医学课件园 ,Morphology,Adult tapeworms have three major parts: The scolex The neck The proglottids,医学课件园 ,tegument microvilli Two muscle layers The nervous system The excretory system There is no digestive system. Male and female gonads,Morphology of proglottids,医学课件园 ,Characteristics of T.saginata and T. solium,T. saginata T. Solium Scolex big small square ball 4 suckers 4 suckers no hooks rostellum with hooks Segment 1000-2000 1000 Length 4-8m 2-4m Egg radially striate radially striate Mature segment Ovary 2 large lobes 1 small and 2 large Gravid segment Uterine branch 15-30 7-12,医学课件园 ,医学课件园 ,Life cycle,医学课件园 ,医学课件园 ,Epidemiology,1.传染源：病人 2.传播途径：食入 3人群易感性：普遍 4.流行情况：,医学课件园 ,Pathogenesis,obstruction tissue invasion,医学课件园 ,Clinical Picture,subclinical The finding of proglottids fullness, diarrhea, constipation, appetite.,医学课件园 ,1 流行病学史 2 临床表现 3 实验室检查 卵Eggs 节片graved proglottid 头节scolex,诊断,医学课件园 ,医学课件园 ,治疗,1.albendazole 14-15 mg/kg /d 2.Praziquantel 15-20mg/kg once,医学课件园 ,Children and pigs in the village of Huancyao in Peru, an area of high cysticercosis transmission,医学课件园 ,肚皮有葡萄大肿块里面竟取出活绦虫, 1999年11月