Heart Septal Defects, AtrialHeart Septal Defects, VentricularHeart Septal DefectsHeart BlockAtrioventricular NodeHeart Conduction SystemAtrioventricular BlockHeart SeptumSeptal Occluder DeviceElectrocardiographyBundle of HisHeart Defects, CongenitalBundle-Branch BlockEndocardial Cushion DefectsCardiac CatheterizationArrhythmias, CardiacHeartAngiocardiographyAtrial SeptumEchocardiography, TransesophagealNeural ConductionBalloon OcclusionEchocardiographyNAV1.5 Voltage-Gated Sodium ChannelProstheses and ImplantsHeart AtriaCardiac Surgical ProceduresForamen OvaleHeart ValvesPacemaker, ArtificialHeart RateSick Sinus SyndromeSinoatrial NodeProsthesis ImplantationPulmonary Valve StenosisConnexinsMuscular Dystrophy, Emery-DreifussEchocardiography, Doppler, ColorWolff-Parkinson-White SyndromeCardiac Pacing, ArtificialHeart VentriclesCardiomyopathy, DilatedAbnormalities, MultipleHeart InjuriesEbstein AnomalyBradycardiaTetralogy of FallotTreatment OutcomeTransposition of Great VesselsAtrial FlutterConnexin 43Aortopulmonary Septal DefectAtrial FunctionMyocardiumTachycardia, SupraventricularMyotonic DystrophyCardiomyopathiesCardiovascular Surgical ProceduresTricuspid ValveAtrial FibrillationMutationTime FactorsFetal DiseasesFollow-Up StudiesInfant, NewbornHeart AneurysmPedigreeSinoatrial BlockPulmonary AtresiaLamin Type APulmonary Subvalvular StenosisPulmonary ArteryEchocardiography, Three-DimensionalPhenotypeDogsFetal HeartTachycardiaCyanosisFluoroscopySodium ChannelsCatheter AblationDuctus Arteriosus, PatentCardiopulmonary BypassCardiac Complexes, PrematurePulmonary VeinsElectrophysiologic Techniques, CardiacVena Cava, SuperiorDextrocardiaHeart DiseasesIatrogenic DiseasePhonocardiographyHemodynamicsHeart MurmursElectrophysiologyAortic Stenosis, SubvalvularRetrospective StudiesCardiovascular AbnormalitiesAortic CoarctationTruncus Arteriosus, PersistentVentricular Septal Rupture