Heart Septal Defects, AtrialHeart Septal Defects, VentricularHeart Septal DefectsHeart BlockAtrioventricular NodeSeptal Occluder DeviceHeart Conduction SystemHeart Defects, CongenitalCardiac CatheterizationAtrioventricular BlockAtrial SeptumElectrocardiographyEchocardiography, TransesophagealBalloon OcclusionBundle of HisHeart SeptumBundle-Branch BlockProstheses and ImplantsEchocardiographyCardiac Surgical ProceduresArrhythmias, CardiacHeartProsthesis ImplantationPulmonary Valve StenosisHeart AtriaEchocardiography, Doppler, ColorNeural ConductionEbstein AnomalyNAV1.5 Voltage-Gated Sodium ChannelAbnormalities, MultipleHeart InjuriesTetralogy of FallotTreatment OutcomeAngiocardiographyTransposition of Great VesselsHeart VentriclesHeart RatePacemaker, ArtificialCardiovascular Surgical ProceduresAortopulmonary Septal DefectSick Sinus SyndromeSinoatrial NodeEndocardial Cushion DefectsHeart AneurysmTricuspid ValveInfant, NewbornEchocardiography, Three-DimensionalPulmonary Subvalvular StenosisConnexinsMuscular Dystrophy, Emery-DreifussPulmonary ArteryFollow-Up StudiesWolff-Parkinson-White SyndromeAtrial FlutterCyanosisPulmonary AtresiaFluoroscopyAtrial FunctionCardiac Pacing, ArtificialTime FactorsCardiomyopathy, DilatedDuctus Arteriosus, PatentCardiopulmonary BypassIatrogenic DiseasePhonocardiographyAtrial FibrillationPulmonary VeinsDextrocardiaVena Cava, SuperiorHeart ValvesBradycardiaMutationFetal HeartConnexin 43MyocardiumPedigreeHeart MurmursFetal DiseasesTachycardia, SupraventricularHemodynamicsSitus InversusCardiomyopathiesCineangiographyPostoperative ComplicationsRetrospective StudiesCardiac VolumeMyotonic DystrophyEisenmenger ComplexForeign-Body MigrationCardiovascular AbnormalitiesAlloysHypertension, PulmonaryHeart Valve DiseasesPhenotypeTricuspid Valve InsufficiencyForamen Ovale, PatentCatheterizationHeterotaxy SyndromeAortic Stenosis, SubvalvularMitral Valve