Venous PressurePortal VeinHypertension, PortalHypertensionHypertension, PulmonaryVaricose UlcerVenous InsufficiencyAxillary VeinFemoral VeinArteriovenous Shunt, SurgicalPortal SystemCerebral VeinsKlippel-Trenaunay-Weber SyndromeArteriovenous FistulaVentriculoperitoneal ShuntVaricose VeinsCentral Nervous System Vascular MalformationsCerebrospinal Fluid ShuntsSubclavian VeinUpper Extremity Deep Vein ThrombosisPortasystemic Shunt, SurgicalCentral Venous PressureVeinsCranial SinusesBrachiocephalic VeinsPortal PressurePortacaval Shunt, SurgicalConstriction, PathologicJugular VeinsPhlebographyHypertension, RenalLigationBlood PressurePeritoneovenous ShuntPulmonary EdemaSaphenous VeinHemodynamicsAntihypertensive AgentsHypertension, RenovascularRenal DialysisLegChronic DiseaseHypertension, MalignantVascular PatencyEsophageal and Gastric VaricesLiver CirculationVascular Surgical ProceduresTreatment OutcomeMicrocirculationSplenic VeinHydrocephalusPulmonary ArteryHypertension, Pregnancy-InducedPortographyMesenteric VeinsGastrointestinal HemorrhageLiver CirrhosisHepatic VeinsRisk FactorsLeukocytesOcular HypertensionHepatic EncephalopathyPulmonary CirculationAscitesIntracranial HypertensionRats, Inbred SHRBlood Pressure DeterminationReninHepatic ArteryVascular ResistanceKidneyLiverTime FactorsFollow-Up StudiesRats, Inbred WKYRetrospective StudiesRenal VeinsDesoxycorticosteroneHypertrophy, Right VentricularProspective StudiesPrevalenceSodium Chloride, DietaryAngiotensin IIBlood Pressure Monitoring, AmbulatoryMonocrotalinePregnancy Complications, CardiovascularSplanchnic CirculationPseudotumor CerebriHypersplenismDisease Models, AnimalHeart Septal Defects, AtrialRats, Sprague-DawleyRenin-Angiotensin SystemVena Cava, InferiorPostoperative ComplicationsHeart RateRegional Blood FlowVasodilator AgentsAldosteroneLiver Transplantation