Central Venous PressureVenous PressureFluid TherapyBlood PressurePressureHemodynamicsMonitoring, IntraoperativePulseIntra-Abdominal HypertensionHypovolemiaIntraoperative CareHydroxyethyl Starch DerivativesCardiac OutputPlasma SubstitutesPlethysmographyMonitoring, PhysiologicStroke VolumeBlood Pressure DeterminationBlood VolumeFluid ShiftsRespiration, ArtificialThermodilutionSupine PositionPulmonary Wedge PressureArterial PressureVascular ResistancePhotoplethysmographyHeart RateHydrostatic PressureHypertensionHead-Down TiltIntracranial PressureOximetryROC CurveLower Body Negative PressureShockVascular CapacitanceTransducers, PressureSystoleAnesthesia, GeneralPostoperative CareRegional Blood FlowTidal VolumePortal PressureDogsPulsatile FlowRespirationProspective StudiesBlood Pressure Monitoring, AmbulatoryJugular VeinsBlood Flow VelocityComplianceWater-Electrolyte BalancePressoreceptorsCritical IllnessSympathetic Nervous SystemPredictive Value of TestsTime FactorsIntraocular PressureIsotonic SolutionsRespiratory MechanicsCerebrospinal Fluid PressureHypotensionVeinsPulmonary ArteryPostureBlood CirculationBaroreflexCardiovascular Surgical ProceduresProne PositionCardiac Surgical ProceduresDiastoleTreatment OutcomeAnesthesiaAntihypertensive AgentsBlood Volume DeterminationHypertension, PortalCapillary ResistanceArteriesEchocardiography, TransesophagealLegAir PressureSplanchnic CirculationHeartAtmospheric PressureCardiovascular SystemForearmConstrictionAortaReflexCatheterization, Central VenousLiftingPositive-Pressure RespirationBlood Loss, SurgicalSphygmomanometersOxygenElasticityVascular StiffnessHemodilutionCarbon Dioxide