Heart Septal Defects, AtrialHeart Septal Defects, VentricularHeart Septal DefectsHeart BlockAtrioventricular NodeHeart Conduction SystemHeart Defects, CongenitalElectrocardiographyAtrioventricular BlockHeartSeptal Occluder DeviceBundle of HisArrhythmias, CardiacCardiac CatheterizationBundle-Branch BlockEchocardiographyEchocardiography, TransesophagealAtrial SeptumHeart RateHeart SeptumNeural ConductionBalloon OcclusionCardiac Surgical ProceduresHeart VentriclesNAV1.5 Voltage-Gated Sodium ChannelMyocardiumFetal HeartHeart AtriaProstheses and ImplantsGlycogen Storage Disease Type IIbCardiomyopathiesPacemaker, ArtificialSick Sinus SyndromeSinoatrial NodeProsthesis ImplantationHeart DiseasesCardiac Pacing, ArtificialPulmonary Valve StenosisConnexinsMyocytes, CardiacMuscular Dystrophy, Emery-DreifussEchocardiography, Doppler, ColorWolff-Parkinson-White SyndromeCardiomyopathy, DilatedHeart InjuriesAbnormalities, MultipleTreatment OutcomeBradycardiaEbstein AnomalyTetralogy of FallotVentricular DysfunctionConnexin 43Transposition of Great VesselsAtrial FlutterMyocardial ContractionAtrial FunctionAortopulmonary Septal DefectTime FactorsAngiocardiographyTachycardia, SupraventricularCardiovascular Surgical ProceduresMyotonic DystrophyFollow-Up StudiesAtrial FibrillationMutationTricuspid ValveEndocardial Cushion DefectsInfant, NewbornFetal DiseasesHeart AneurysmUltrasonography, PrenatalPedigreeDogsSinoatrial BlockPulmonary ArteryPulmonary AtresiaLamin Type APulmonary Subvalvular StenosisPhenotypeHeart ValvesEchocardiography, Three-DimensionalTachycardiaCyanosisSodium ChannelsHemodynamicsCardiopulmonary BypassFluoroscopyCatheter AblationDuctus Arteriosus, PatentElectrophysiologic Techniques, CardiacCardiac Complexes, PrematurePulmonary VeinsCardiac VolumeVena Cava, SuperiorRetrospective StudiesDextrocardiaHeart MurmursPhonocardiographyPostoperative ComplicationsIatrogenic Disease