Cerebrospinal Fluid PressureExtracellular FluidPressurePortal VeinHypertensionHypertension, PortalBlood PressureHydrostatic PressureIntracranial PressureHypertension, PulmonaryPortal SystemTransducers, PressureExtracellular SpacePortal PressureHypertension, RenalEdemaAntihypertensive AgentsBlood Pressure DeterminationIntracranial HypertensionHypertension, RenovascularIntraocular PressureIntracranial HypotensionVascular ResistanceHypertension, MalignantBlood Pressure Monitoring, AmbulatoryCapillary PermeabilityCerebrospinal FluidCerebral VentriclesHydrodynamicsOsmotic PressureDogsVenous PressureTime FactorsBlood VolumeHemodynamicsRegional Blood FlowCranial SinusesLiver CirculationCerebrospinal Fluid ShuntsHeart RateBody FluidsNeoplasm TransplantationDisease Models, AnimalHeadacheArterial PressureBlood VesselsHypertension, Pregnancy-InducedPulmonary ArteryRats, Inbred SHRReninOcular HypertensionEsophageal and Gastric VaricesModels, BiologicalKidneyRats, WistarPortasystemic Shunt, SurgicalAtmospheric PressureSystoleMice, NudeNeovascularization, PathologicAir PressureCapillariesOxygenTransplantation, HeterologousRats, Inbred WKYRisk FactorsSplenic VeinPulmonary Wedge PressureFinite Element AnalysisVentricular PressureCerebrovascular CirculationAngiotensin IISodium Chloride, DietaryProspective StudiesRats, Sprague-DawleyLiver CirrhosisNeoplasms, ExperimentalCarbon DioxideTreatment OutcomeMesenteric VeinsFollow-Up StudiesDesoxycorticosteroneHepatic VeinsRenin-Angiotensin SystemCollagenDiastolePrevalenceNeoplasmsPortographyStress, MechanicalPermeabilityTumor BurdenCentral Venous PressureSympathetic Nervous SystemPregnancy Complications, CardiovascularVasodilator AgentsIsofluraneMagnetic Resonance ImagingHypertrophy, Right VentricularAldosterone