Current Management of Ventricular Tachycardia:Approaches and Timing-中国Betway体育网页登陆

摘要 Ventriculartachycardia(VT)inthepresenceofstructuralheartdiseaseisassociatedwithsuddencardiacdeathandwarrantspromptattention.Implantablecardioverterdefibrillators(ICDs)whilehighlyeffectiveinterminatingsustainedventriculararrhythmiasandreducingmortality,havenoeffectonthearrhythmiasubstrateandrecurrentshocksforVTterminationoccurinapproximately20%ofpatients.Shocksworsenqualityoflifeandareassociatedwithprogressionofheartfailureandincreasedmortality.Antiarrhythmicdrugs,mainlyintheformofbeta-blockersoramiodarone,aremoderatelyeffectiveinreducingICDtherapiesbutdrugintoleranceandserioustoxicitiesofamiodaronenecessitatedrugcessationinaquarterofpatients.CatheterablationhasemergedasaneffectivetreatmentforcontroloffrequentVTepisodesandcanbelifesavingincasesofincessantVTorVTstorm.Asexperienceincreases,itisbeingusedincreasinglyearlier,ratherthanalastresorttherapy.Efficacyvarieswiththenatureoftheunderlyingheartdisease.Intramuralarrhythmiasubstrateandfailuretocreatepermanentablationlesionsremainchallengesandrepeatproceduresarenecessaryinathirdtoahalfofpatients.ForidiopathicVTsorPVCsthataresymptomaticorworsenLVfunction,catheterablationisoftenaneffectivetherapy.

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Current Management of Ventricular Tachycardia:Approaches and Timing

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