OxygenVeinsSaphenous VeinPortal VeinOxygen ConsumptionVaricose VeinsReactive Oxygen SpeciesFemoral VeinPulmonary VeinsJugular VeinsMesenteric VeinsUmbilical VeinsRenal VeinsIliac VeinOxygen Inhalation TherapyHepatic VeinsPopliteal VeinSinglet OxygenSubclavian VeinSplenic VeinCerebral VeinsRetinal VeinAzygos VeinBrachiocephalic VeinsOxygen IsotopesAxillary VeinRetinal Vein OcclusionHyperbaric OxygenationPartial PressureVenous ThrombosisAnoxiaOxidation-ReductionTime FactorsHydrogen PeroxideOxidative StressVenous InsufficiencyOximetryPhlebographyCells, CulturedMolecular Sequence DataVena Cava, InferiorGraft Occlusion, VascularAntioxidantsLegCarbon DioxideUltrasonography, Doppler, DuplexEndothelium, VascularTreatment OutcomeOxyhemoglobinsSuperoxide DismutaseHemoglobinsHuman Umbilical Vein Endothelial CellsMitochondriaAerobiosisFree RadicalsFree Radical ScavengersCatalaseNADPH OxidaseMutationVascular PatencyCell HypoxiaHyperoxiaThrombophlebitisKineticsSuperoxidesAnaerobiosisBlood Gas AnalysisRegional Blood FlowVascular Surgical ProceduresDogsBase SequenceModels, BiologicalNitric OxideHemodynamicsSignal TransductionAmino Acid SequenceDose-Response Relationship, DrugLiver CirculationVascular GraftingPolarographyProspective StudiesVenous PressureLuminescent MeasurementsRats, Sprague-DawleyConstriction, PathologicIschemiaBlood Flow VelocityCatheter AblationRabbitsLiverVenae CavaeApoptosisEnergy MetabolismEndothelial CellsAnastomosis, SurgicalEscherichia coliRNA, MessengerDisease Models, AnimalRespirationHydrogen-Ion Concentration