Heart Defects, CongenitalHeartHeart DiseasesCyanosisHeart RateHeart Septal DefectsFetal HeartCoronary DiseaseInfant, NewbornTetralogy of FallotRheumatic Heart DiseaseHeart FailureHeart Septal Defects, VentricularRisk FactorsCardiac Surgical ProceduresHeterotaxy SyndromeHeart TransplantationMyocardial IschemiaHeart Septal Defects, AtrialTransposition of Great VesselsEisenmenger ComplexHeart BlockEchocardiographyHeart ValvesProspective StudiesFollow-Up StudiesRetrospective StudiesAbnormalities, MultipleDextrocardiaHeart AtriaUltrasonography, PrenatalPulmonary ArteryCardiac CatheterizationMyocardiumPulmonary Valve StenosisDuctus Arteriosus, PatentPregnancy Complications, CardiovascularHypertension, PulmonaryPulmonary CirculationCohort StudiesHeart Valve DiseasesDouble Outlet Right VentricleTreatment OutcomeNeonatal ScreeningPulmonary AtresiaCardiologyCardiac Care FacilitiesFetal DiseasesTime FactorsPregnancyCardiovascular AbnormalitiesCardiomyopathiesHemodynamicsCarcinoid Heart DiseaseRisk AssessmentAge FactorsEbstein AnomalyIncidencePrevalenceHeart Function TestsPrenatal DiagnosisHypoplastic Left Heart SyndromeAortic CoarctationDown SyndromePredictive Value of TestsCardiovascular Surgical ProceduresEchocardiography, Four-DimensionalMyocardial InfarctionDiGeorge SyndromeHeart VentriclesFontan ProcedureCase-Control StudiesEndocardial Cushion DefectsGestational AgeElectrocardiographyArrhythmias, CardiacCardiovascular DiseasesPulmonary Heart DiseaseEchocardiography, Three-DimensionalCardiopulmonary BypassOximetryPostoperative ComplicationsMyocytes, CardiacSitus InversusPrognosisPulmonary ValveRiskCause of DeathBiological MarkersAbortion, TherapeuticSyndromeStroke VolumeCardiomyopathy, DilatedExercise TestVentricular Outflow ObstructionMyocardial ContractionUnited StatesTruncus Arteriosus, PersistentHeart MurmursSex Factors