Pulsatile FlowElectric CountershockBlood Flow VelocityUmbilical ArteriesUltrasonography, DopplerSignal Processing, Computer-AssistedUltrasonography, Doppler, PulsedNystagmus, CongenitalPhotoplethysmographyUltrasonography, PrenatalPlacental CirculationAction PotentialsVentricular FibrillationUltrasonography, Doppler, ColorDefibrillatorsWavelet AnalysisRadial ArteryBlood Pressure DeterminationModels, CardiovascularElectrodesFetal Growth RetardationArteriesPulseNystagmus, PathologicDifferential ThresholdHeart Rate, FetalEquipment DesignReproducibility of ResultsAlgorithmsElectric StimulationPregnancyBlood PressureElectrophysiologyElectromagnetic RadiationElectric OrganModels, NeurologicalFetal HeartElectric FishCardiotocographyVascular ResistanceEvoked Potentials, AuditoryGestational AgeMonitoring, PhysiologicTime FactorsFourier AnalysisPlethysmographyRheologyCatheterization, Swan-GanzCardiography, ImpedanceElectroretinographyComputer SimulationReaction TimeAortaPregnancy Trimester, SecondOximetryAnimal CommunicationEvoked PotentialsMonitoring, IntraoperativeFetal MonitoringRegional Blood FlowAcoustic StimulationOphthalmic ArteryTransducers, PressureManometryElectronystagmographyUltrasonicsHemodynamicsEvoked Potentials, VisualFetusIntracranial PressureSensitivity and SpecificityAcousticsElectroencephalographyElectric ConductivityPatch-Clamp TechniquesElectrocardiographyComplianceUltrasonographyUterusAnalog-Digital ConversionArtifactsSound SpectrographyThermodilutionDiagnosis, Computer-AssistedFemoral ArteryPulse Wave AnalysisBlood Volume DeterminationElectricityElectric CapacitanceGasesBlood Pressure MonitorsMicrocomputersBrachial ArteryHepatic VeinsCarotid ArteriesPolygelineSystoleRadiationElectrodes, ImplantedHeart, Artificial