急性化脓性中耳炎

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1、WelcomeAcutesuppurativeOtitisMediaFirstAffiliatedHospitalofChongqingMedicalUniversityYuLinAcutesuppurativeotitismedia(ASOM)isinflammationofthemiddleearcleftduetobacterialinfection.Itisalsoreferredtoas'acuteotitismedia'.AcutesuppurativeotitismediaASOMismostcommoninchildrenbetweentheagesof3to7year

2、s.Suchinfantshaveashort,wide,morehorizonallyplacedeustachiantubethanadults,allowingcontaminationfromtheregurgitationoffeed.Poorsanitation,over-crowdingandmalnutritionareallriskfactorsinchildren.Riskfactorsinallagegroupsincluderecurrentorchronicrhinosinusitis,chestdiseaseandeustachiantubedysfunction

3、.ASOMisabacterialdiseasecausedbypusformingorganisms.Pathogenicbacteriahavebeenisolatedfromthenasopharynxinupto97%ofchildrenwithASOM.Thebacterialinfectionmaybeaprimaryinfection,orsecondaryfollowingaviralacutenon-suppurativeotitismedia.BacteriologyBacteriaenterthemiddleearcleftviatheeustachiantube,at

4、ympanicmembraneperforationorareblood-borne.Commonorganismsinclude:Betahaemolyticstreptococcus(40%)Haemophilusinfluenzae(30%)Moraxellacatarrhalis(10%)BacteriologyorganismsmucousmembraneinflammationsuppurativestagecatarrhalstageinfectionresolvesruptureoftympanicinfectionresolveschronicityPathologyinv

5、adecausingSourcesofinfectioninotitismediatheEustachiantubeisthechiefroutea.upperrespiratorytractinfectionfrequentlyacomplicationofviralinfectioncommoncold,acuterhinitis,acutetonsillitisacuteadenoiditisb.acuteinfectionmeasles,scarletfeverorinfluenzac.swimminganddivingd.anatomicalfactorstheEustachian

6、tubeisshorter,widerandmorehorizontalinchildtheexternalauditorymeatustraumaticperforationoftympanicmembraneGeneralsymptomsfever,elevationofpulserate,malaiseChildrensufferfromgeneraltoxaemiaandlocalsymptomsarenotevident.Temperaturemaybeashighas39℃,thechildiscryingandpullingattheearorburrowingitintoth

7、epillow.SymptomandsignLocalsymptomsotalgiasharp,lancinatingcharacterduetoaccumulationofpusandpressurenecrosisofthetympanicmembrane.Iftympanicmembraneruptures,thepaingoesaway.symptomhearinglossconductivetype