Heart Defects, CongenitalCyanosisHeartHeart DiseasesHeart Septal DefectsInfant, NewbornTetralogy of FallotFetal HeartHeart Septal Defects, VentricularHeterotaxy SyndromeCardiac Surgical ProceduresHeart Septal Defects, AtrialHeart RateTransposition of Great VesselsEisenmenger ComplexCoronary DiseaseRheumatic Heart DiseaseAbnormalities, MultipleRisk FactorsHeart FailureEchocardiographyHeart BlockDextrocardiaUltrasonography, PrenatalRetrospective StudiesPulmonary ArteryPulmonary Valve StenosisDuctus Arteriosus, PatentHeart TransplantationProspective StudiesCardiac CatheterizationHypertension, PulmonaryPregnancy Complications, CardiovascularHeart ValvesPregnancyDouble Outlet Right VentricleFollow-Up StudiesPulmonary AtresiaNeonatal ScreeningPulmonary CirculationFetal DiseasesCardiovascular AbnormalitiesCardiac Care FacilitiesCardiologyMyocardial IschemiaHeart AtriaEbstein AnomalyTreatment OutcomePrenatal DiagnosisEndocardial Cushion DefectsDown SyndromeAortic CoarctationDiGeorge SyndromeEchocardiography, Four-DimensionalCardiovascular Surgical ProceduresMyocardiumHeart Valve DiseasesFontan ProcedureTime FactorsGestational AgeHypoplastic Left Heart SyndromeCohort StudiesHeart VentriclesHemodynamicsCardiomyopathiesOximetrySitus InversusEchocardiography, Three-DimensionalCardiopulmonary BypassAbortion, TherapeuticSyndromeTruncus Arteriosus, PersistentPostoperative ComplicationsPulmonary ValveAge FactorsPrevalenceArrhythmias, CardiacRisk AssessmentPredictive Value of TestsVentricular Outflow ObstructionIncidenceCase-Control StudiesElectrocardiographyTricuspid AtresiaHeart MurmursFailure to ThriveHeart Function TestsPulmonary Heart DiseaseVentricular Dysfunction, RightEndocarditisDuctus ArteriosusPregnancy OutcomePrognosisPhenotypeTachycardia, SupraventricularSeverity of Illness IndexMutationEchocardiography, DopplerExercise TestFetal Death