Atrioventricular NodeHeart Conduction SystemBundle of HisTachycardia, Atrioventricular Nodal ReentryHeart BlockSinoatrial NodeElectrocardiographyCardiac Pacing, ArtificialNeural ConductionArrhythmias, CardiacCatheter AblationNAV1.5 Voltage-Gated Sodium ChannelElectrophysiologic Techniques, CardiacTachycardia, ParoxysmalPurkinje FibersHeart AtriaSodium ChannelsTachycardiaSodiumHeartLymph NodesWolff-Parkinson-White SyndromeMyocytes, CardiacAtrioventricular BlockConnexinsTachycardia, SupraventricularCardiac ElectrophysiologyHeart VentriclesAction PotentialsMyocardiumElectrophysiologyAnti-Arrhythmia AgentsModels, CardiovascularPacemaker, ArtificialAtrial FibrillationAtrial FunctionTachycardia, Ectopic JunctionalSinus Arrest, CardiacDogsRefractory Period, ElectrophysiologicalHeart RateAtrial FlutterSick Sinus SyndromeElectrocoagulationConnexin 43Death, Sudden, CardiacBrugada SyndromeHeart SeptumRabbitsTime FactorsKearns-Sayre SyndromeMyotonic DystrophyBradycardiaVagus NerveTachycardia, Ectopic AtrialSp4 Transcription FactorUltimobranchial BodyBody Surface Potential MappingRadio WavesBundle-Branch BlockCardiac OutputHeart DiseasesGap JunctionsFollow-Up StudiesHeart NeoplasmsT-Box Domain ProteinsVentricular FunctionTricuspid ValveElectric StimulationMicroelectrodesCardiomyopathy, DilatedTreatment OutcomeMice, TransgenicMuscle ProteinsMutationMuscular Dystrophy, Emery-DreifussLymph Node ExcisionCardiac Surgical ProceduresPhenotypeGene Expression Regulation, DevelopmentalMembrane PotentialsLamin Type ALong QT SyndromeRanvier's NodesDisease Models, AnimalLac OperonAdenosineSentinel Lymph Node BiopsyPedigreeAtropineSodium, DietaryRetrospective Studies