Mesenteric Artery, InferiorMesenteric Artery, SuperiorMesenteric ArteriesCeliac ArteryMesenteric Vascular OcclusionArteriesSuperior Mesenteric Artery SyndromeHepatic ArteryAneurysmSplenic ArteryDuodenumEmbolization, TherapeuticPulmonary ArteryPancreaticoduodenectomyRenal ArteryAngiographyStomachSplanchnic CirculationAneurysm, FalseCerebral ArteriesCarotid ArteriesTomography, X-Ray ComputedDuodenostomyFemoral ArteryAortic Aneurysm, AbdominalBasilar ArteryBlood Vessel Prosthesis ImplantationVasodilationVasoconstrictionMuscle, Smooth, VascularMesenteric VeinsAorta, AbdominalUltrasonography, DopplerIliac ArteryAmpulla of VaterVertebral ArteryEndoleakCoronary Artery BypassColitis, IschemicDuodenal DiseasesIschemiaStentsVasoconstrictor AgentsTreatment OutcomeRadial ArteryVasodilator AgentsMammary ArteriesRetroperitoneal SpaceRegional Blood FlowCarotid Artery, InternalAortographyEndothelium, VascularDuodenal ObstructionSubclavian ArteryBiological FactorsCarotid Artery DiseasesPeptic UlcerNorepinephrineRats, WistarBrachial ArteryCoronary VesselsPhenylephrineStomach DiseasesPostoperative ComplicationsCarotid Artery, CommonAcetylcholineRetrospective StudiesRats, Sprague-DawleyConstriction, PathologicTime FactorsReperfusion InjuryBlood PressureArterial Occlusive DiseasesMyographyOphthalmic ArteryNitric OxideRenal Artery ObstructionRenal VeinsRats, Inbred WKYMuscle ContractionDose-Response Relationship, DrugUmbilical ArteriesMiddle Cerebral ArteryThoracic ArteriesVascular Surgical ProceduresAneurysm, DissectingTemporal ArteriesMuscle RelaxationDogsBronchial ArteriesVisceraPopliteal ArteryJejunostomyLaparoscopyUlnar ArteryPotassium ChlorideVena Cava, InferiorIntestinesUterine ArteryDuodenal Ulcer