Heart Defects, CongenitalCyanosisHeartHeart DiseasesHeart Septal DefectsInfant, NewbornTetralogy of FallotFetal HeartHeart Septal Defects, VentricularHeterotaxy SyndromeCardiac Surgical ProceduresHeart RateTransposition of Great VesselsEisenmenger ComplexHeart Septal Defects, AtrialCoronary DiseaseRheumatic Heart DiseaseHeart FailureRisk FactorsAbnormalities, MultipleEchocardiographyHeart BlockDextrocardiaUltrasonography, PrenatalRetrospective StudiesPulmonary ArteryPulmonary Valve StenosisDuctus Arteriosus, PatentHeart TransplantationHypertension, PulmonaryProspective StudiesCardiac CatheterizationPregnancy Complications, CardiovascularHeart ValvesDouble Outlet Right VentriclePulmonary AtresiaFollow-Up StudiesNeonatal ScreeningPulmonary CirculationPregnancyFetal DiseasesCardiac Care FacilitiesCardiovascular AbnormalitiesCardiologyMyocardial IschemiaEbstein AnomalyHeart AtriaPrenatal DiagnosisTreatment OutcomeDown SyndromeAortic CoarctationDiGeorge SyndromeEchocardiography, Four-DimensionalCardiovascular Surgical ProceduresHeart Valve DiseasesMyocardiumFontan ProcedureEndocardial Cushion DefectsHypoplastic Left Heart SyndromeGestational AgeCohort StudiesHeart VentriclesTime FactorsHemodynamicsCardiomyopathiesOximetryEchocardiography, Three-DimensionalSitus InversusCardiopulmonary BypassAbortion, TherapeuticPulmonary ValvePostoperative ComplicationsTruncus Arteriosus, PersistentAge FactorsArrhythmias, CardiacPrevalenceRisk AssessmentVentricular Outflow ObstructionPredictive Value of TestsSyndromeIncidenceTricuspid AtresiaElectrocardiographyCase-Control StudiesHeart MurmursPulmonary Heart DiseaseHeart Function TestsFailure to ThriveVentricular Dysfunction, RightEndocarditisDuctus ArteriosusPregnancy OutcomePrognosisTachycardia, SupraventricularSeverity of Illness IndexChylothoraxEchocardiography, DopplerCarcinoid Heart DiseaseExercise TestCardiac-Gated Imaging Techniques