Atrioventricular NodeHeart Conduction SystemBundle of HisTachycardia, Atrioventricular Nodal ReentryHeart BlockSinoatrial NodeElectrocardiographyCardiac Pacing, ArtificialArrhythmias, CardiacNeural ConductionCatheter AblationElectrophysiologic Techniques, CardiacNAV1.5 Voltage-Gated Sodium ChannelTachycardia, ParoxysmalPurkinje FibersHeart AtriaHeartTachycardiaLymph NodesWolff-Parkinson-White SyndromeMyocytes, CardiacAtrioventricular BlockCardiac ElectrophysiologyTachycardia, SupraventricularConnexinsHeart VentriclesMyocardiumAction PotentialsAnti-Arrhythmia AgentsModels, CardiovascularPacemaker, ArtificialAtrial FibrillationElectrophysiologyAtrial FunctionTachycardia, Ectopic JunctionalHeart RateSodium ChannelsSinus Arrest, CardiacDogsStroke VolumeRefractory Period, ElectrophysiologicalAtrial FlutterSick Sinus SyndromeDeath, Sudden, CardiacElectrocoagulationTime FactorsConnexin 43Brugada SyndromeHeart SeptumKearns-Sayre SyndromeBradycardiaMyotonic DystrophyRabbitsVagus NerveTachycardia, Ectopic AtrialCardiac OutputFollow-Up StudiesSp4 Transcription FactorUltimobranchial BodyHeart DiseasesCardiomyopathy, DilatedVentricular Function, LeftBody Surface Potential MappingRadio WavesBundle-Branch BlockVentricular FunctionHeart FailureTreatment OutcomeVentricular Dysfunction, LeftMilk EjectionGap JunctionsTricuspid ValveHeart NeoplasmsT-Box Domain ProteinsCardiac Surgical ProceduresEchocardiographyMyocardial ContractionElectric StimulationMicroelectrodesMice, TransgenicMuscle ProteinsMuscular Dystrophy, Emery-DreifussLymph Node ExcisionMutationRetrospective StudiesPhenotypeGene Expression Regulation, DevelopmentalLamin Type ADisease Models, AnimalLong QT SyndromeCardiac CatheterizationMyocardial InfarctionAdenosineCardiomyopathiesLac OperonRanvier's NodesSentinel Lymph Node BiopsyMembrane PotentialsHemodynamicsVentricular Remodeling