Heart Defects, CongenitalFetal HeartMyocytes, CardiacHeartAbnormalities, MultipleNuchal Translucency MeasurementNoonan SyndromeUltrasonography, PrenatalHeart Septal DefectsHeart Septal Defects, VentricularLower Extremity Deformities, CongenitalDiGeorge SyndromeFetal DiseasesCardiac Surgical ProceduresCardiovascular AbnormalitiesCardiac OutputUpper Extremity Deformities, CongenitalPregnancyHeart Septal Defects, AtrialChromosomes, Human, Pair 22Endocardial Cushion DefectsLEOPARD SyndromeNeckDichloroethylenesGestational AgeArrhythmias, CardiacPregnancy Trimester, FirstEndocardial CushionsMyocardiumSyndromeDeath, Sudden, CardiacEchocardiographyInfant, NewbornHeart ValvesSitus InversusTetralogy of FallotHajdu-Cheney SyndromeHeart VentriclesPulmonary AtresiaTwins, ConjoinedGene Expression Regulation, DevelopmentalMutationPhenotypeCrown-Rump LengthTrichloroethyleneChromosome DisordersTracheoesophageal FistulaDown SyndromeCongenital AbnormalitiesEchocardiography, Doppler, ColorCardiomegalyCardiac TamponadeCardiac Pacing, ArtificialHeart DiseasesCardiac CatheterizationKaryotypingPregnancy Trimester, SecondPericardiumMice, KnockoutTime FactorsAortic CoarctationUltrasonography, Doppler, PulsedMyocardial ContractionGene DeletionChromosome DeletionHeart ArrestMice, TransgenicBlood Flow VelocityTransposition of Great VesselsDisease Models, AnimalTrisomyPrenatal DiagnosisZebrafishProspective StudiesRetrospective StudiesCardiomyopathiesFetal DeathMyoblasts, CardiacHeart FailureElectrocardiographySignal TransductionTranscription FactorsGeorgiaCardiac MyosinsT-Box Domain ProteinsCardiac Imaging TechniquesIn Situ HybridizationChromosome AberrationsPregnancy OutcomeMice, Inbred C57BLNeural CrestCardiac GlycosidesHeart RateMolecular Sequence DataFollow-Up StudiesHomeodomain ProteinsHemodynamicsCardiac Output, LowMesodermMorphogenesis