Heart Conduction SystemHeart VentriclesHeartAtrioventricular NodeNeural ConductionBundle of HisHeart BlockPurkinje FibersVentricular Function, RightDouble Outlet Right VentricleMyocardiumHeart RateHeart AtriaVentricular Dysfunction, RightSinoatrial NodeElectrocardiographyVentricular FunctionHeart Defects, CongenitalConnexinsArrhythmias, CardiacAtrioventricular BlockHypertrophy, Right VentricularHeart SeptumMyocardial ContractionCerebral VentriclesHeart DiseasesHeart FailureCardiac Pacing, ArtificialFetal HeartT-Box Domain ProteinsHeart Septal Defects, VentricularTransposition of Great VesselsMyocytes, CardiacHeterotaxy SyndromeDogsAction PotentialsThird VentricleWolff-Parkinson-White SyndromeFourth VentricleModels, CardiovascularPericardiumEchocardiographyConnexin 43CardiomyopathiesElectrophysiologyTetralogy of FallotSp4 Transcription FactorGene Expression Regulation, DevelopmentalRefractory Period, ElectrophysiologicalTricuspid ValveEndocardiumTime FactorsPulmonary ArteryDextrocardiaCardiac ElectrophysiologyLateral VentriclesAcetylthiocholineBundle-Branch BlockHemodynamicsPacemaker, ArtificialAnti-Arrhythmia AgentsVentricular SeptumCardiomyopathy, DilatedCerebral Ventricle NeoplasmsTachycardiaElectrophysiologic Techniques, CardiacHypertension, PulmonaryGATA6 Transcription FactorHeart TransplantationArrhythmogenic Right Ventricular DysplasiaVentricular Function, LeftPulmonary Valve StenosisPulmonary ValveHeart ValvesHeart InjuriesHeart NeoplasmsNAV1.5 Voltage-Gated Sodium ChannelCardiac Surgical ProceduresStroke VolumeCardiac CatheterizationMonocrotalineSitus InversusThiolester HydrolasesHypoplastic Left Heart SyndromeLac OperonAngiocardiographyHeart Septal DefectsCardiomegalyVentricular PressureDeath, Sudden, CardiacCnidariaDisease Models, AnimalBradycardiaAntigens, CD57Tachycardia, Atrioventricular Nodal ReentryEbstein AnomalyMice, TransgenicLamin Type AChick EmbryoRabbits