Venous PressurePortal VeinHypertensionHypertension, PortalHypertension, PulmonaryVaricose UlcerVenous InsufficiencyAxillary VeinFemoral VeinArteriovenous Shunt, SurgicalCerebral VeinsPortal SystemKlippel-Trenaunay-Weber SyndromeArteriovenous FistulaVaricose VeinsCentral Nervous System Vascular MalformationsUpper Extremity Deep Vein ThrombosisSubclavian VeinCentral Venous PressureVeinsCranial SinusesBrachiocephalic VeinsPortal PressurePhlebographyConstriction, PathologicJugular VeinsHypertension, RenalLigationBlood PressureSaphenous VeinPulmonary EdemaAntihypertensive AgentsHemodynamicsHypertension, RenovascularLegRenal DialysisChronic DiseaseHypertension, MalignantVascular PatencyVascular Surgical ProceduresMicrocirculationTreatment OutcomeLiver CirculationHypertension, Pregnancy-InducedEsophageal and Gastric VaricesPortasystemic Shunt, SurgicalRisk FactorsLeukocytesOcular HypertensionSplenic VeinPulmonary ArteryRats, Inbred SHRReninLiver CirrhosisBlood Pressure DeterminationMesenteric VeinsIntracranial HypertensionPortographyKidneyHepatic VeinsVenous ThrombosisDeep Brain StimulationVascular ResistanceRats, Inbred WKYTime FactorsHepatic ArteryDesoxycorticosteroneLiverPortacaval Shunt, SurgicalPregnancy Complications, CardiovascularPrevalenceHypertrophy, Right VentricularGastrointestinal HemorrhageSodium Chloride, DietaryBlood Pressure Monitoring, AmbulatoryMonocrotalineFollow-Up StudiesAngiotensin IIProspective StudiesRats, Sprague-DawleyRenin-Angiotensin SystemRetrospective StudiesDisease Models, AnimalSplanchnic CirculationAldosteroneHeart RateVasodilator AgentsHyperaldosteronismPseudotumor CerebriHypertrophy, Left VentricularCardiovascular DiseasesSodium, DietaryHypersplenismSystoleDiureticsNitric OxideDiet, Sodium-RestrictedPulmonary CirculationPortasystemic Shunt, Transjugular IntrahepaticSplenorenal Shunt, Surgical