Ventricular FibrillationAtrial FibrillationArrhythmias, CardiacElectric CountershockElectrocardiographyHeart ArrestAnti-Arrhythmia AgentsTachycardia, VentricularCardiopulmonary ResuscitationHeart Conduction SystemDeath, Sudden, CardiacCardiac Pacing, ArtificialDefibrillatorsDefibrillators, ImplantableElectrophysiologic Techniques, CardiacCatheter AblationHeartAmiodaroneCardiac Complexes, PrematureHeart AtriaArrhythmia, SinusBody Surface Potential MappingDogsTachycardiaMyocytes, CardiacHeart VentriclesHeart RateBrugada SyndromeTime FactorsRefractory Period, ElectrophysiologicalResuscitationElectrocardiography, AmbulatoryPericardiumVentricular Premature ComplexesMyocardial IschemiaTreatment OutcomeFlecainideMyocardial InfarctionPulmonary VeinsAction PotentialsAtrial FlutterEndocardiumMyocardiumModels, CardiovascularHeart MassageProcainamideOut-of-Hospital Cardiac ArrestDeath, SuddenFollow-Up StudiesSwineCardiac Surgical ProceduresNAV1.5 Voltage-Gated Sodium ChannelCardiac OutputHeart DiseasesProspective StudiesPacemaker, ArtificialMyocardial Reperfusion InjuryRecurrenceLidocaineLong QT SyndromeVoltage-Sensitive Dye ImagingSyncopeBundle-Branch BlockElectrophysiologyEpicardial MappingSotalolRisk FactorsWarfarinTachycardia, SupraventricularDisease Models, AnimalAnticoagulantsMyocardial ContractionDisopyramideCardiac ElectrophysiologyPropafenoneEmergency Medical ServicesHemodynamicsHeart FailureWolff-Parkinson-White SyndromeCardiomyopathiesAtrial AppendageHypothermia, InducedEchocardiographyDigitalis GlycosidesPerfusionRetrospective StudiesVentricular FunctionPredictive Value of TestsPurkinje FibersSignal Processing, Computer-AssistedAdrenergic beta-AntagonistsElectric InjuriesHeart BlockSyndromeBradycardiaVentricular Function, LeftFourier AnalysisBlood PressureHypokalemiaSodium Channels