Atrioventricular NodeHeart Conduction SystemTachycardia, Atrioventricular Nodal ReentryTachycardiaBundle of HisHeart BlockTachycardia, SupraventricularElectrocardiographyTachycardia, VentricularCatheter AblationSinoatrial NodeTachycardia, ParoxysmalCardiac Pacing, ArtificialArrhythmias, CardiacElectrophysiologic Techniques, CardiacNeural ConductionTachycardia, Ectopic AtrialNAV1.5 Voltage-Gated Sodium ChannelHeart AtriaWolff-Parkinson-White SyndromeTachycardia, Ectopic JunctionalPurkinje FibersHeartAnti-Arrhythmia AgentsAtrioventricular BlockCardiac ElectrophysiologyMyocytes, CardiacLymph NodesTachycardia, SinusConnexinsHeart VentriclesElectrophysiologyHeart RateAction PotentialsMyocardiumAtrial FibrillationPacemaker, ArtificialAtrial FlutterModels, CardiovascularAtrial FunctionDogsRefractory Period, ElectrophysiologicalBody Surface Potential MappingDeath, Sudden, CardiacSodium ChannelsElectrocoagulationSinus Arrest, CardiacSick Sinus SyndromeBrugada SyndromeBradycardiaConnexin 43Time FactorsHeart SeptumBundle-Branch BlockVagus NervePostural Orthostatic Tachycardia SyndromeRabbitsMyotonic DystrophyKearns-Sayre SyndromeFollow-Up StudiesTachycardia, Sinoatrial Nodal ReentryTachycardia, ReciprocatingRadio WavesSp4 Transcription FactorUltimobranchial BodyTreatment OutcomeHeart DiseasesCardiac OutputCardiomyopathy, DilatedGap JunctionsHeart NeoplasmsVentricular FibrillationVentricular FunctionElectric StimulationTricuspid ValveT-Box Domain ProteinsLong QT SyndromeCardiac Surgical ProceduresMicroelectrodesMice, TransgenicRetrospective StudiesMutationMuscle ProteinsAdenosineMuscular Dystrophy, Emery-DreifussFlecainideEndocardiumLymph Node ExcisionDisease Models, AnimalAtropinePhenotypeCardiomyopathiesCardiac CatheterizationDefibrillators, ImplantableProcainamideGene Expression Regulation, DevelopmentalLamin Type AElectrocardiography, AmbulatoryAmiodaroneCardiac Complexes, Premature