Heart Defects, CongenitalCyanosisHeartHeart DiseasesHeart Septal DefectsInfant, NewbornIncidenceTetralogy of FallotFetal HeartHeart Septal Defects, VentricularHeterotaxy SyndromeCardiac Surgical ProceduresHeart RateTransposition of Great VesselsRisk FactorsHeart Septal Defects, AtrialEisenmenger ComplexCoronary DiseaseRheumatic Heart DiseaseRetrospective StudiesHeart FailureAbnormalities, MultipleProspective StudiesEchocardiographyHeart BlockDextrocardiaFollow-Up StudiesUltrasonography, PrenatalPulmonary ArteryPulmonary Valve StenosisHeart TransplantationDuctus Arteriosus, PatentHypertension, PulmonaryPregnancyCardiac CatheterizationPregnancy Complications, CardiovascularHeart ValvesNeonatal ScreeningDouble Outlet Right VentriclePulmonary AtresiaPulmonary CirculationTreatment OutcomeFetal DiseasesCardiac Care FacilitiesCardiovascular AbnormalitiesCohort StudiesTime FactorsMyocardial IschemiaCardiologyHeart AtriaEbstein AnomalyPrenatal DiagnosisDown SyndromeAortic CoarctationDiGeorge SyndromeCardiovascular Surgical ProceduresEchocardiography, Four-DimensionalHeart Valve DiseasesMyocardiumPostoperative ComplicationsPrevalenceGestational AgeFontan ProcedureEndocardial Cushion DefectsRisk AssessmentHypoplastic Left Heart SyndromeHeart VentriclesHemodynamicsCardiomyopathiesOximetryCardiopulmonary BypassArrhythmias, CardiacSitus InversusEchocardiography, Three-DimensionalPredictive Value of TestsAbortion, TherapeuticPulmonary ValveTruncus Arteriosus, PersistentAge FactorsCase-Control StudiesSyndromeVentricular Outflow ObstructionElectrocardiographyPrognosisTricuspid AtresiaHeart MurmursPulmonary Heart DiseaseHeart Function TestsPregnancy OutcomeEndocarditisVentricular Dysfunction, RightFailure to ThriveUnited StatesSeverity of Illness IndexDuctus ArteriosusRiskTachycardia, SupraventricularChi-Square DistributionAge DistributionRegistries