Central Venous PressureVenous PressureBlood PressurePressureHemodynamicsCardiac OutputBlood CirculationVeinsBlood VolumeVascular CapacitanceVascular ResistancePlasma SubstitutesHeart RateVena Cava, InferiorFluid TherapyHypovolemiaRegional Blood FlowPulmonary Wedge PressureBlood Pressure DeterminationLower Body Negative PressureDogsAtrial Function, RightVenae CavaeHydroxyethyl Starch DerivativesMonitoring, IntraoperativePortal PressureJugular VeinsPostureIntracranial PressureFemoral VeinPressoreceptorsAzygos VeinSupine PositionVena Cava, SuperiorPulmonary VeinsIsotonic SolutionsHydrostatic PressureShockSplanchnic CirculationPulmonary CirculationMonitoring, PhysiologicHypotensionSympathetic Nervous SystemTransducers, PressureCerebrospinal Fluid PressureHeart Defects, CongenitalHead-Down TiltBlood Flow VelocityRespirationScimitar SyndromeStroke VolumeHypertension, PortalCapillary ResistancePortal SystemAnesthesiaTime FactorsCatheterization, Central VenousHeartBlood Loss, SurgicalPlethysmographyAnesthesia, GeneralCarbon DioxideConstrictionBaroreflexPositive-Pressure RespirationIntra-Abdominal HypertensionIntraoperative CareCardiac Surgical ProceduresOrgan Dysfunction ScoresHemodilutionCardiopulmonary BypassPopliteal VeinHypertensionHepatectomyFontan ProcedureBlood Volume DeterminationColloidsPulmonary ArteryReflexCardiovascular DeconditioningForearmHeart AtriaPortal VeinPulmonary EdemaIntraocular PressureTreatment OutcomeProspective StudiesNorepinephrineTrimetazidineCarotid SinusOxygenAnesthesia, EpiduralIntensive CareShock, SepticCardiovascular SystemCardiac CatheterizationCollateral CirculationAtrial Natriuretic FactorAcid-Base EquilibriumHepatic Veins