Heart Septal Defects, AtrialHeart Septal Defects, VentricularHeart Septal DefectsHeart BlockAtrioventricular NodeHeart Conduction SystemArrhythmias, CardiacAtrioventricular BlockElectrocardiographySeptal Occluder DeviceBundle of HisHeart Defects, CongenitalBundle-Branch BlockCardiac CatheterizationHeartAtrial SeptumEchocardiography, TransesophagealHeart SeptumNeural ConductionBalloon OcclusionNAV1.5 Voltage-Gated Sodium ChannelEchocardiographyHeart AtriaProstheses and ImplantsCardiac Surgical ProceduresHeart RatePacemaker, ArtificialSick Sinus SyndromeSinoatrial NodeProsthesis ImplantationPulmonary Valve StenosisConnexinsHeart VentriclesCardiac Pacing, ArtificialMuscular Dystrophy, Emery-DreifussWolff-Parkinson-White SyndromeEchocardiography, Doppler, ColorAtrial FlutterCardiomyopathy, DilatedBradycardiaTachycardia, SupraventricularTetralogy of FallotTreatment OutcomeAbnormalities, MultipleHeart InjuriesConnexin 43Ebstein AnomalyMyocardiumAtrial FibrillationTransposition of Great VesselsAtrial FunctionArrhythmia, SinusAortopulmonary Septal DefectCardiomyopathiesTime FactorsTachycardiaAngiocardiographyFollow-Up StudiesMyotonic DystrophyCardiovascular Surgical ProceduresMutationTricuspid ValveFetal DiseasesEndocardial Cushion DefectsHeart AneurysmDogsInfant, NewbornCardiac Complexes, PrematurePedigreeSinoatrial BlockCatheter AblationAnti-Arrhythmia AgentsLamin Type APulmonary AtresiaElectrophysiologic Techniques, CardiacPulmonary Subvalvular StenosisPulmonary ArteryPhenotypeEchocardiography, Three-DimensionalSodium ChannelsFetal HeartCyanosisHeart ValvesFluoroscopyPulmonary VeinsHeart DiseasesDuctus Arteriosus, PatentElectrophysiologyCardiopulmonary BypassHemodynamicsVena Cava, SuperiorRetrospective StudiesPostoperative ComplicationsDextrocardiaHeart MurmursIatrogenic DiseasePhonocardiographyVagus NerveCardiovascular AbnormalitiesAortic Stenosis, Subvalvular