Heart Defects, CongenitalHeartHeart FailureHeart RateCardiac Output, LowFetal HeartHeart TransplantationAbnormalities, MultipleHeart Septal Defects, VentricularHeart DiseasesHemodynamicsCardiomyopathy, DilatedCardiac Pacing, ArtificialHeart Septal DefectsHeart-Assist DevicesHeart Septal Defects, AtrialInfant, NewbornEnoximoneMyocardiumGrowth Differentiation Factor 1EchocardiographyHeart ValvesSeverity of Illness IndexTreatment OutcomeStroke VolumeDown SyndromeEndocardial Cushion DefectsCardiovascular AbnormalitiesCardiotonic AgentsUltrasonography, PrenatalPregnancyVentricular Dysfunction, LeftTime FactorsPacemaker, ArtificialDiureticsChromosomes, Human, Pair 22Choanal AtresiaPulmonary Wedge PressureHydrazonesVentricular Function, LeftProspective StudiesCardiomyopathiesAdrenergic beta-AntagonistsNoonan SyndromeMyocardial ContractionFollow-Up StudiesSyndromeHypoplastic Left Heart SyndromeHeart VentriclesFetal DiseasesRisk FactorsBundle-Branch BlockVentricular DysfunctionNatriuretic Peptide, BrainChronic DiseaseDiGeorge SyndromeMutationSpironolactoneMineralocorticoid Receptor AntagonistsRetrospective StudiesColobomaVentricular RemodelingPhenotypeTetralogy of FallotCyanosisAtrial Natriuretic FactorCardiac Surgical ProceduresCardiac CatheterizationGestational AgeHeart AtriaHeart Arrest, InducedFaciesPyridazinesNuchal Translucency MeasurementDouble-Blind MethodChromosome DeletionTrisomyPrognosisExercise TestSitus InversusAngiotensin-Converting Enzyme InhibitorsCardiac Resynchronization TherapyPredictive Value of TestsHeart BlockVasodilator AgentsSympathetic Nervous SystemAmiodaroneMyocytes, CardiacCaptoprilGene Expression Regulation, DevelopmentalMyocardial InfarctionCraniofacial AbnormalitiesElectrocardiographyOxygen ConsumptionNeonatal ScreeningTransposition of Great VesselsKaryotypingOximetryPrenatal DiagnosisFolic Acid