Mesenteric Artery, InferiorMesenteric Artery, SuperiorCeliac ArteryMesenteric ArteriesDuodenumAneurysmArteriesMesenteric Vascular OcclusionPancreasSuperior Mesenteric Artery SyndromeAngiographyAneurysm, FalseTomography, X-Ray ComputedSplenic ArteryPulmonary ArteryRenal ArteryHepatic ArterySplanchnic CirculationPancreaticoduodenectomyCerebral ArteriesCarotid ArteriesDuodenostomyFemoral ArteryEmbolization, TherapeuticPancreas TransplantationAortic Aneurysm, AbdominalBasilar ArteryBlood Vessel Prosthesis ImplantationVasodilationVasoconstrictionMuscle, Smooth, VascularMesenteric VeinsAorta, AbdominalUltrasonography, DopplerIliac ArteryTreatment OutcomeArterial Occlusive DiseasesVertebral ArteryEndoleakCoronary Artery BypassColitis, IschemicIschemiaVasoconstrictor AgentsStentsRadial ArteryVasodilator AgentsMammary ArteriesRetroperitoneal SpaceRegional Blood FlowPostoperative ComplicationsAnastomosis, SurgicalCarotid Artery, InternalAortographyEndothelium, VascularSubclavian ArteryBiological FactorsCarotid Artery DiseasesTime FactorsDogsNorepinephrineRats, WistarBrachial ArteryCoronary VesselsPhenylephrineCarotid Artery, CommonAcetylcholineConstriction, PathologicReperfusion InjuryRats, Sprague-DawleyBlood PressureRetrospective StudiesMyographyDuodenal ObstructionOphthalmic ArteryNitric OxideRenal Artery ObstructionRenal VeinsRats, Inbred WKYMuscle ContractionDose-Response Relationship, DrugUmbilical ArteriesMiddle Cerebral ArteryThoracic ArteriesVascular Surgical ProceduresAneurysm, DissectingTemporal ArteriesMuscle RelaxationBronchial ArteriesVisceraPopliteal ArteryJejunostomyLaparoscopyAmpulla of VaterUlnar ArteryPotassium ChlorideVena Cava, InferiorIntestinesUterine ArteryCoronary AngiographyNG-Nitroarginine Methyl Ester