Atrioventricular NodeTachycardia, Atrioventricular Nodal ReentryHeart Conduction SystemBundle of HisCatheter AblationTachycardiaTachycardia, SupraventricularHeart BlockElectrocardiographyTachycardia, ParoxysmalElectrophysiologic Techniques, CardiacCardiac Pacing, ArtificialTachycardia, Sinoatrial Nodal ReentryTachycardia, VentricularWolff-Parkinson-White SyndromeSinoatrial NodeArrhythmias, CardiacCryosurgeryTachycardia, Ectopic JunctionalAtrioventricular BlockTachycardia, Ectopic AtrialHeart AtriaNeural ConductionAtrial FlutterTachycardia, SinusAccessory Atrioventricular BundleCardiac ElectrophysiologyAnti-Arrhythmia AgentsNAV1.5 Voltage-Gated Sodium ChannelElectrophysiologyBody Surface Potential MappingPurkinje FibersHeartElectrocoagulationAtrial FibrillationMyocytes, CardiacLymph NodesTachycardia, ReciprocatingFollow-Up StudiesConnexinsHeart RateHeart VentriclesHeart SeptumMetaproterenolPre-Excitation SyndromesTreatment OutcomeRadio WavesAction PotentialsMyocardiumPacemaker, ArtificialTime FactorsModels, CardiovascularAtrial FunctionDogsFluoroscopyRefractory Period, ElectrophysiologicalDeath, Sudden, CardiacSodium ChannelsSinus Arrest, CardiacPre-Excitation, Mahaim-TypeSick Sinus SyndromeBrugada SyndromeRecurrenceBradycardiaPulsed Radiofrequency TreatmentConnexin 43Bundle-Branch BlockRetrospective StudiesVagus NerveCardiac CatheterizationEncainidePostural Orthostatic Tachycardia SyndromeRabbitsMyotonic DystrophyKearns-Sayre SyndromeAzygos VeinHeart Defects, CongenitalAdenosineElectrocardiography, AmbulatorySp4 Transcription FactorUltimobranchial BodyHeart DiseasesCardiac OutputProspective StudiesHeart Function TestsCardiomyopathy, DilatedGap JunctionsPostoperative ComplicationsHeart NeoplasmsVentricular FibrillationVentricular FunctionElectric StimulationTricuspid ValveT-Box Domain ProteinsIsoproterenolLong QT SyndromeCardiac Surgical ProceduresMicroelectrodesMice, TransgenicAutonomic Nervous System