Central Venous PressureVenous PressureBlood PressurePressureHemodynamicsPulsatile FlowPlasma SubstitutesFluid TherapyCardiac OutputIntracranial PressureVascular ResistanceHypovolemiaBlood VolumeHeart RateBlood Pressure DeterminationJugular VeinsLower Body Negative PressureVascular CapacitanceMonitoring, IntraoperativePulseRegional Blood FlowOphthalmodynamometryHydroxyethyl Starch DerivativesPulmonary Wedge PressureRetinal VeinPortal PressureBlood CirculationInterferometryHydrostatic PressureIsotonic SolutionsIntraocular PressureDogsVeinsBlood Flow VelocityMonitoring, PhysiologicTransducers, PressureSympathetic Nervous SystemCerebrospinal Fluid PressurePressoreceptorsHead-Down TiltSupine PositionHypertension, PortalCapillary ResistanceAnesthesiaCatheterization, Central VenousPostureSplanchnic CirculationSubarachnoid SpaceBlood Loss, SurgicalHypotensionCardiotocographyPlethysmographyAnesthesia, GeneralBaroreflexConstrictionIntra-Abdominal HypertensionIntraoperative CareOrgan Dysfunction ScoresFundus OculiHemodilutionTime FactorsShockHepatectomyHypertensionVena Cava, InferiorChoroidBlood Volume DeterminationColloidsFemoral VeinCardiovascular DeconditioningReflexForearmProspective StudiesStroke VolumePortal VeinPulmonary EdemaHeartCerebrospinal FluidCerebrovascular CirculationLaser-Doppler FlowmetryAnesthesia, EpiduralShock, SepticIntensive CareOxygenPulmonary CirculationRespirationCardiovascular SystemCollateral CirculationAtrial Natriuretic FactorPositive-Pressure RespirationAcid-Base EquilibriumCarbon DioxideHepatic VeinsCardiac Surgical ProceduresCardiopulmonary BypassFetal MonitoringTransilluminationPostoperative CareHematocritUltrasonography, Doppler