Portal VeinPortal SystemCarbadoxLiver CirculationLiverHypertension, PortalEmbolism, AirHepatic VeinsHepatic ArteryGlucoseMesenteric VeinsVeinsPortal PressurePortasystemic Shunt, SurgicalSplenorenal Shunt, SurgicalTachyphylaxisSaphenous VeinGasesSplanchnic CirculationVaricose VeinsSplenic VeinDogsPortographyFemoral VeinVenous ThrombosisJugular VeinsRegional Blood FlowFatty Acids, VolatilePulmonary VeinsLiver NeoplasmsHepatectomyLiver CirrhosisIntestinal AbsorptionHepatic EncephalopathyInfusions, IntravenousRenal VeinsRats, Sprague-DawleyIliac VeinLiver TransplantationTime FactorsBlood GlucoseEsophageal and Gastric VaricesInsulinPortacaval Shunt, SurgicalLiver DiseasesUmbilical VeinsCarcinoma, HepatocellularVena Cava, InferiorEpinephrine