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1、WelcomeAcutesuppurativeOtitisMediaFirstAffiliatedHospitalofChongqingMedicalUniversity YuLinAcutesuppurativeotitismedia(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
