Portal VeinCatheters, IndwellingHypertension, PortalPortal SystemCathetersVeinsMesenteric VeinsPortal PressureLiver CirculationSaphenous VeinHepatic VeinsVaricose VeinsHepatic ArteryCatheterizationJugular VeinsSplenic VeinFemoral VeinPulmonary VeinsCatheterization, Central VenousVenous ThrombosisPortographyPortasystemic Shunt, SurgicalLiverCatheterization, PeripheralRenal VeinsIliac VeinCentral Venous CathetersCardiac CathetersEsophageal and Gastric VaricesHepatectomySubclavian VeinUmbilical VeinsUrinary CatheterizationLiver NeoplasmsPortacaval Shunt, SurgicalLiver CirrhosisLiver TransplantationVena Cava, InferiorSplenorenal Shunt, SurgicalTreatment OutcomeUrinary CathetersSplanchnic CirculationLigationEquipment FailurePopliteal VeinTomography, X-Ray ComputedThrombosisCarcinoma, HepatocellularCatheter-Related InfectionsDogsTime FactorsAzygos VeinVenous PressureMuscle, Smooth, VascularEquipment DesignPhlebographyBudd-Chiari SyndromeEmbolization, TherapeuticGastrointestinal HemorrhageSplenic ArteryCerebral VeinsBrachiocephalic VeinsRetrospective StudiesAnastomosis, SurgicalPortasystemic Shunt, Transjugular IntrahepaticSplenectomyAngiographyVenae CavaeProspective StudiesLiver DiseasesAxillary VeinRegional Blood FlowConstriction, PathologicRetinal VeinUltrasonography, Doppler, ColorForeign-Body MigrationNorepinephrineLiving DonorsUltrasonography, DopplerRabbitsFluoroscopyFollow-Up StudiesHypersplenismCatheterization, Swan-GanzAtrial FibrillationBlood Flow VelocityLiver Diseases, ParasiticRetinal Vein OcclusionChemoembolization, TherapeuticPhlebitisSwineCardiac CatheterizationHemodynamicsBile DuctsAscitesLiver Cirrhosis, ExperimentalUltrasonographyHepatic EncephalopathyPostoperative ComplicationsLiver Regeneration