Umbilical ArteriesSingle Umbilical ArteryUltrasonography, PrenatalUmbilical VeinsUltrasonography, DopplerFetal Growth RetardationPlacental CirculationArteriesPregnancyHeart Rate, FetalBlood Flow VelocityGestational AgeUltrasonography, Doppler, PulsedUmbilical CordFetal DistressPulsatile FlowFetal MonitoringPlacental InsufficiencyFetusCerebral ArteriesFetal DiseasesPulmonary ArteryUltrasonography, Doppler, ColorPregnancy OutcomeFetal BloodInfant, NewbornPregnancy Trimester, ThirdMiddle Cerebral ArteryCarotid ArteriesPlacentaFemoral ArteryUterine ArteryRenal ArteryPregnancy Trimester, SecondFetal HypoxiaHernia, UmbilicalMesenteric ArteriesFetofetal TransfusionFetal HeartBasilar ArteryHallermann's SyndromePre-EclampsiaEndothelium, VascularPregnancy, High-RiskInfant, Small for Gestational AgeDigestive System AbnormalitiesApgar ScoreProspective StudiesFetal DeathIliac ArteryRegional Blood FlowVertebral ArteryCoronary Artery BypassPregnancy Trimester, FirstPlacenta DiseasesUterusRadial ArteryMammary ArteriesVascular ResistanceMuscle, Smooth, VascularHuman Umbilical Vein Endothelial CellsCarotid Artery, InternalSubclavian ArteryCardiotocographyFetal WeightCesarean SectionMaternal-Fetal ExchangeCarotid Artery DiseasesUmbilicusChorionSplenic ArteryBrachial ArteryAbnormalities, MultipleDihydralazinePregnancy, ProlongedHepatic ArteryCarotid Artery, CommonUltrasonographyCells, CulturedCoronary VesselsCardiovascular AbnormalitiesLaser-Doppler FlowmetryFetal MovementReference ValuesEndothelial CellsOligohydramniosBlood CirculationPrenatal DiagnosisVasoconstrictionBirth WeightDuctus ArteriosusSensitivity and SpecificityPregnancy Complications, CardiovascularVasodilationCeliac ArteryHSP20 Heat-Shock ProteinsOphthalmic ArteryMesenteric Artery, SuperiorAnesthesia, ObstetricalPredictive Value of Tests