Heart Septal Defects, AtrialHeart Septal DefectsHeart Septal Defects, VentricularHeart BlockAtrioventricular NodeHeart Defects, CongenitalHeart Conduction SystemEndocardial Cushion DefectsSeptal Occluder DeviceHeart SeptumAtrioventricular BlockElectrocardiographyEchocardiographyCardiac CatheterizationBundle of HisDown SyndromeCardiac Surgical ProceduresTetralogy of FallotBundle-Branch BlockAortopulmonary Septal DefectAbnormalities, MultipleArrhythmias, CardiacHeart ValvesEchocardiography, TransesophagealAtrial SeptumHeartHeart AtriaBalloon OcclusionInfant, NewbornProstheses and ImplantsFetal DiseasesNeural ConductionHeart VentriclesFetal HeartNAV1.5 Voltage-Gated Sodium ChannelProsthesis ImplantationPulmonary Valve StenosisTreatment OutcomeEchocardiography, Doppler, ColorMitral ValveMitral Valve InsufficiencyPacemaker, ArtificialHeart RateTransposition of Great VesselsSick Sinus SyndromeSinoatrial NodeFollow-Up StudiesHeart InjuriesRetrospective StudiesConnexinsChromosomes, Human, Pair 21Ultrasonography, PrenatalMuscular Dystrophy, Emery-DreifussPregnancyEbstein AnomalyWolff-Parkinson-White SyndromeAngiocardiographyPulmonary AtresiaCardiac Pacing, ArtificialTricuspid ValveCardiovascular Surgical ProceduresCardiomyopathy, DilatedHeart AneurysmPulmonary Subvalvular StenosisPulmonary ArteryAtrial FlutterBradycardiaAtrial FunctionConnexin 43MyocardiumMutationReoperationTime FactorsTachycardia, SupraventricularEchocardiography, Three-DimensionalGestational AgeCardiomyopathiesMyotonic DystrophyPedigreeAtrial FibrillationCyanosisDuctus Arteriosus, PatentFluoroscopyAortic Stenosis, SubvalvularPhenotypeTruncus Arteriosus, PersistentAortic CoarctationVentricular Septal RuptureCardiopulmonary BypassSinoatrial BlockLamin Type AHeart MurmursDogsDextrocardiaVena Cava, SuperiorPulmonary VeinsCardiovascular AbnormalitiesDouble Outlet Right VentricleIatrogenic DiseaseCineangiography