简介:ThispaperaddressesamanagementmodelforIPnetworkbasedonNextGenerationOperationSupportSystem(NGOSS).ItmakesthenetworkmanagementonthebaseofalltheoperationactionsofISP,ItprovidesQoStouserservicethroughthewholepathbyprovidingend-to-endServiceLevelAgreements(SLA)managementthroughwholepath.Basedonwebandcoordinationtechnology,thispapergivesanimplementarchitectureofthismodel.
简介:Ventriculartachycardia(VT)inthepresenceofstructuralheartdiseaseisassociatedwithsuddencardiacdeathandwarrantspromptattention.Implantablecardioverterdefibrillators(ICDs)whilehighlyeffectiveinterminatingsustainedventriculararrhythmiasandreducingmortality,havenoeffectonthearrhythmiasubstrateandrecurrentshocksforVTterminationoccurinapproximately20%ofpatients.Shocksworsenqualityoflifeandareassociatedwithprogressionofheartfailureandincreasedmortality.Antiarrhythmicdrugs,mainlyintheformofbeta-blockersoramiodarone,aremoderatelyeffectiveinreducingICDtherapiesbutdrugintoleranceandserioustoxicitiesofamiodaronenecessitatedrugcessationinaquarterofpatients.CatheterablationhasemergedasaneffectivetreatmentforcontroloffrequentVTepisodesandcanbelifesavingincasesofincessantVTorVTstorm.Asexperienceincreases,itisbeingusedincreasinglyearlier,ratherthanalastresorttherapy.Efficacyvarieswiththenatureoftheunderlyingheartdisease.Intramuralarrhythmiasubstrateandfailuretocreatepermanentablationlesionsremainchallengesandrepeatproceduresarenecessaryinathirdtoahalfofpatients.ForidiopathicVTsorPVCsthataresymptomaticorworsenLVfunction,catheterablationisoftenaneffectivetherapy.
简介:Chronicpancreatitisisanongoingdiseasecharacterizedbypersistentinflammationofpancreatictissues.Withdiseaseprogression,patientswithchronicpancreatitismaydeveloptroublesomecomplicationsinadditiontoexocrineandendocrinepancreaticfunctionalloss.Amongthem,apseudoaneurysm,mainlyinducedbydigestiveenzymeerosionofvesselsinproximitytothepancreas,isarareandlife-threateningcomplicationifbleedingofthepseudoaneurysmoccurs.Atpresent,noprospectiverandomizedtrialshaveinvestigatedthetherapeuticstrategyforthisrarebutcriticalsituation.Theroleofarterialembolization,thetimingofsurgicalinterventionandevensurgicalproceduresarestillcontroversial.Inthisreview,wesuggestthatdynamicabdominalcomputedtomographyandangiographyshouldbeperformedfirsttolocalizethebleedersandtoevaluatetheassociatedcomplicationssuchaspseudocystformation,followedbyarterialembolizationtostopthebleedingandtoachieveearlystabilizationofthepatient’scondition.Withadvancesandimprovementsinendoscopicdevicesandtechniques,therapeuticendoscopyforpancreaticpseudocystsistechnicallyfeasible,safeandeffective.Surgicalinterventionisrecommendedforableedingpseudoaneurysminpatientswithchronicpancreatitiswhoareinanunstablecondition,forthoseinwhomarterialembolizationofthebleedingpseudoaneurysmfails,andwhenendoscopicmanagementofthepseudocystisunsuccessful.Ifableedingpseudoaneurysmislocatedoverthetailofthepancreas,resectionisapreferentialprocedure,whereasifthelesionissituatedovertheheadorbodyofthepancreas,relativelyconservativesurgicalproceduresarerecommended.
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简介:Objective:Toinvestigatetheclinicaltypingandprophylactico-therapeuticmeasuresforacuteposttraumaticbrainswelling(BS).Methods:Aretrospectivestudywasperformedin66casesofacuteposttraumaticBS.Therewere3groupsbasedoncomputeredtomography(CT)scanning:23casesofhemispherebrainswelling(HBS)withmiddlelineshiftforlessthan5mmwithin24hours(GroupA),20withmiddlelineshiftformorethan5mm(GroupB),and23withbilateraldiffusebrainswelling(GroupC).Results:(1)ThemortalityratesoftheoperativeandnonoperativemanagementinGroupA,GroupB,andGroupCwere20.0%,31.6%,and75.0%versus44.4%,0,and85.7%,respectively(P>0.05);whiletheratesinsubgroupswithdifferentmiddlelineshift(morethan5mmandlessorequal5mm)were29.2%and75.0%versus75.0%and44.4%,respectively(0.05>P>0.01).(2)ThegoodrecoveryrateandmortalityinGroupAwere47.8%and39.1%,respectivelyandinGroupC,8.7%and78.3%,respectively,TherewasaverysignificantdifferencebetweenGroupAandGroupC(P<0.01).(3)Thetotalsurvivalrateoftheselectivecomprehensivetherapywas53.1%.Conclusions:(1)AcuteposttraumaticBSneedstobediagnosedcorrectlyandpromptlywithCTscanningwithin4hours.(2)Forpatientswithmidlineshiftformorethan5mm,especiallywiththin-layeredsubduralhematoma,surgicalinterventionisessentialtoreducethefatalityofacuteposttraumaticBS.