Ventricular FibrillationElectric CountershockAtrial FibrillationDefibrillatorsHeart ArrestCardiopulmonary ResuscitationDefibrillators, ImplantableElectrocardiographyAnti-Arrhythmia AgentsTachycardia, VentricularArrhythmias, CardiacHeart Conduction SystemCardiac Pacing, ArtificialElectrophysiologic Techniques, CardiacHeart MassageDeath, Sudden, CardiacAmiodaroneResuscitationBody Surface Potential MappingDogsOut-of-Hospital Cardiac ArrestElectrodesCatheter AblationSwineDifferential ThresholdHeart AtriaPericardiumElectrodes, ImplantedTime FactorsEmergency Medical ServicesRefractory Period, ElectrophysiologicalBrugada SyndromeModels, CardiovascularHeartTreatment OutcomeCardiac Complexes, PrematureTachycardiaHeart VentriclesEndocardiumEquipment DesignHeart RateProspective StudiesFlecainideAction PotentialsPulmonary VeinsElectric InjuriesEquipment FailurePacemaker, ArtificialMyocardial IschemiaFollow-Up StudiesLidocaineProcainamideSotalolRecurrenceVolunteersMyocardial InfarctionElectrophysiologyEquipment SafetyDeath, SuddenAtrial FlutterElectrocardiography, AmbulatoryWarfarinHypothermia, InducedAnticoagulantsAdvanced Cardiac Life SupportDisease Models, AnimalWolff-Parkinson-White SyndromeBundle-Branch BlockPerfusionSignal Processing, Computer-AssistedEpicardial MappingVentricular Premature ComplexesMyocardiumVentricular FunctionVoltage-Sensitive Dye ImagingRisk FactorsNAV1.5 Voltage-Gated Sodium ChannelAtrial AppendageSyncopeDisopyramidePurkinje FibersSurvival RateMyocardial Reperfusion InjuryThoracotomyRabbitsAmbulancesRetrospective StudiesElectricityPropafenoneFourier AnalysisHemodynamicsAtrial Function, LeftPredictive Value of TestsEvaluation Studies as TopicHeart DiseasesSyndromeHeart FailureEmergency Medical TechniciansThoraxHeart Injuries