Central Venous PressureVenous PressureCatheters, IndwellingBlood PressurePressureCathetersHemodynamicsPlasma SubstitutesCardiac OutputFluid TherapyCatheterization, Central VenousHypovolemiaBlood VolumeBlood Pressure DeterminationVascular ResistanceHeart RateJugular VeinsLower Body Negative PressureVascular CapacitancePulmonary Wedge PressureHydroxyethyl Starch DerivativesMonitoring, IntraoperativeCatheterizationPortal PressureIntracranial PressureRegional Blood FlowDogsHydrostatic PressureIsotonic SolutionsVeinsMonitoring, PhysiologicTransducers, PressureSympathetic Nervous SystemCerebrospinal Fluid PressurePressoreceptorsHead-Down TiltSupine PositionHypertension, PortalCapillary ResistanceAnesthesiaBlood CirculationPostureSplanchnic CirculationCatheterization, PeripheralAnesthesia, GeneralFemoral VeinHypotensionBlood Loss, SurgicalPlethysmographyIntraoperative CareConstrictionIntra-Abdominal HypertensionTime FactorsBaroreflexVena Cava, InferiorProspective StudiesHemodilutionOrgan Dysfunction ScoresShockHypertensionBlood Volume DeterminationHepatectomyColloidsReflexForearmStroke VolumeCardiovascular DeconditioningTreatment OutcomePortal VeinPulmonary EdemaCentral Venous CathetersHeartIntraocular PressureCardiac CatheterizationIntensive CareOxygenPulmonary CirculationShock, SepticCardiac Surgical ProceduresCardiac CathetersAnesthesia, EpiduralRespirationUrinary CatheterizationPostoperative CareCarbon DioxideCardiovascular SystemCollateral CirculationHepatic VeinsPulmonary ArteryPositive-Pressure RespirationCardiopulmonary BypassAtrial Natriuretic FactorAcid-Base EquilibriumHeart AtriaBlood Flow VelocityHematocritRespiration, ArtificialVentricular Function, RightSodium ChlorideArterial Pressure