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ID:59478755
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页数:36页
时间:2020-09-14
《结核病总论英文ppt课件.ppt》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、我国结核病的疫情状况WHO93年宣布“全球结核病紧急状态”,98年又重申遏制结核病的行动刻不容缓。全球现有结核病人2000万,其中95%在发展中国家,每年还会新发生800-1000万肺结核病,其中75%的病人年龄在15-50岁。如不控制,今后10年还将有9000万人发病。中国是全球22个结核病高负担国家之一,结核病人数位居世界第二位,仅次于印度.据调查全国三分之一的人口已感染了结核菌;受感染人数超过4亿,受结核感染人群中有10%的人发生结核病1.tuberculosisfactoroftubercu
2、losisincidencerising:HIVspread.TBstrainoccurdrugresistance.fluidpopulationincreasing.ManagementTBpatientnotperfect、preventionandcurenotefficiency.Poverty、populationincreasing.2.etiologyMycobacterium、Acidfastness、G+、aerobe。Growthtorpidity,cultureneed4-6
3、weeks.Typing:humantype、bovinetype、Birdtype、mousetype、mainhumantype。wayofinfection:respirationtract、digestivetrack、skinorplacenta.3.Epidemiology1infectionsources:openpulmonarytuberculosis2routeoftransmission:byrespirationwayordigestiontract.3susceptible
4、population4.EpidemiologyThefactorsleadChildrenillwithTBContactTBamountsandtoxicity.powerofresistance.hereditaryfactor.5.pathogenesybacterialnumber、toxicity、immunizationconditionCell-mediatedimmunereaction:macrophageswallowTB→antigenpresentationThandmac
5、rophage→IL12→CD+4→TH1-IF-γ→topromotemononuclearcell;togather、activation、proliferationanddifferentiation→toproducealexinandoxidase、digestiveenzyme→tokillTB6.pathogenesyIF-reinforcementCD+8、NKcellsactivitytophagocytosisTB.meanwhiletoleadhistoclasiadelaye
6、dallergy:Tcellmedia,macrophagetobeeffectorcell,tokillreinfectionTBandcausecheesynecrosisorholeformationAfterInfectionTB:primarydisease(5%),Secondarydisease(5%),nottofallillalllive(90%)7.diagnoseObjectivetodiscoverfocal。Definitediseasecharacter、sizewhet
7、herornotdeliverbacterium。8.diagnose1historyTBtoxicsymptomtocontactTBpatientBCGvaccinationacuteinfection:measles,pertussisSupersensitivityerythemanodosum、exanthematousconjunctivitis。9.diagnose2:OTtestagent:1/2000or1/10000PPDdose:0.1ML(OT5U)(or1U)。positi
8、on:leftforearmpalmarisbelow1/3Infuseintracutaneousform6-10mmhillock。48~72hrobservationreaction。10.diagnosisreaction<5mm(-)≧5mm(+)10-19mm(++)≧20mm(+++)Superreaction:induration、vesic、localulceration(++++)。11.diagnosissignificancepositiver
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