Heart Septal Defects, AtrialHeart Septal Defects, VentricularHeart Septal DefectsHeart BlockAtrioventricular NodeHeart Conduction SystemAtrioventricular BlockSeptal Occluder DeviceElectrocardiographyBundle of HisHeart Defects, CongenitalBundle-Branch BlockCardiac CatheterizationArrhythmias, CardiacHeartAtrial SeptumEchocardiography, TransesophagealHeart SeptumNeural ConductionBalloon OcclusionEchocardiographyNAV1.5 Voltage-Gated Sodium ChannelHeart AtriaProstheses and ImplantsCardiac Surgical ProceduresPacemaker, ArtificialHeart RateSick Sinus SyndromeSinoatrial NodeProsthesis ImplantationPulmonary Valve StenosisConnexinsMuscular Dystrophy, Emery-DreifussEchocardiography, Doppler, ColorWolff-Parkinson-White SyndromeCardiac Pacing, ArtificialHeart VentriclesCardiomyopathy, DilatedAbnormalities, MultipleHeart InjuriesEbstein AnomalyTetralogy of FallotTreatment OutcomeBradycardiaAtrial FlutterTransposition of Great VesselsConnexin 43Aortopulmonary Septal DefectAtrial FunctionMyocardiumAngiocardiographyTachycardia, SupraventricularCardiomyopathiesMyotonic DystrophyCardiovascular Surgical ProceduresTime FactorsEndocardial Cushion DefectsFollow-Up StudiesTricuspid ValveAtrial FibrillationMutationFetal DiseasesInfant, NewbornHeart AneurysmPedigreePulmonary ArterySinoatrial BlockPulmonary AtresiaLamin Type APulmonary Subvalvular StenosisEchocardiography, Three-DimensionalDogsPhenotypeFetal HeartTachycardiaHeart ValvesCyanosisVentricular Function, RightFluoroscopyCatheter AblationSodium ChannelsDuctus Arteriosus, PatentCardiopulmonary BypassElectrophysiologic Techniques, CardiacCardiac Complexes, PrematureVena Cava, SuperiorHemodynamicsPulmonary VeinsDextrocardiaHeart DiseasesIatrogenic DiseasePhonocardiographyHeart MurmursRetrospective StudiesElectrophysiologyCardiovascular AbnormalitiesPostoperative ComplicationsAortic Stenosis, SubvalvularAortic CoarctationSitus Inversus