Heart Defects, CongenitalHeartHeart RateFetal HeartCyanosisHeart Septal Defects, VentricularHeart Septal DefectsInfant, NewbornHeart FailureHeart DiseasesAbnormalities, MultipleHeart Septal Defects, AtrialHeart TransplantationHeart ValvesHeart BlockTetralogy of FallotCardiac Surgical ProceduresUltrasonography, PrenatalPregnancyEndocardial Cushion DefectsDown SyndromeCardiovascular AbnormalitiesEchocardiographyHeart AtriaGrowth Differentiation Factor 1Transposition of Great VesselsMyocardiumHypoplastic Left Heart SyndromeFetal DiseasesHeart Arrest, InducedChromosomes, Human, Pair 22SyndromeNoonan SyndromeRetrospective StudiesDiGeorge SyndromeGestational AgeNeonatal ScreeningRisk FactorsHemodynamicsTime FactorsProspective StudiesMyocytes, CardiacHeterotaxy SyndromePrenatal DiagnosisPulmonary ArteryPulmonary Valve StenosisDuctus Arteriosus, PatentSitus InversusHeart Function TestsCardiac CatheterizationTruncus Arteriosus, PersistentFaciesOximetryFollow-Up StudiesPhenotypeTreatment OutcomeAortic CoarctationPulmonary AtresiaMutationHeart SeptumChoanal AtresiaTrisomyMyocardial ContractionTricuspid AtresiaEisenmenger ComplexColobomaCase-Control StudiesCardiopulmonary BypassPulmonary CirculationGene Expression Regulation, DevelopmentalEndocardiumChromosome DeletionNuchal Translucency MeasurementMyocardial IschemiaHypertension, PulmonaryCardiomyopathiesMusculoskeletal AbnormalitiesCohort StudiesPregnancy Trimester, SecondKaryotypingArkansas