Mesenteric Artery, SuperiorMesenteric ArteriesSuperior Mesenteric Artery SyndromeMesenteric Artery, InferiorMesenteric Vascular OcclusionCeliac ArteryArteriesSplanchnic CirculationDuodenostomyRenal ArteryMesenteric VeinsSplenic ArteryPulmonary ArteryVasodilationVasoconstrictionMuscle, Smooth, VascularHepatic ArteryTomography, X-Ray ComputedAngiographyCerebral ArteriesFemoral ArteryCarotid ArteriesVasoconstrictor AgentsAneurysmDuodenal ObstructionBasilar ArteryVasodilator AgentsReperfusion InjuryIliac ArteryData CompressionIschemiaConstriction, PathologicSpinal Cord CompressionRats, WistarBiological FactorsEndothelium, VascularNorepinephrineRenal VeinsNerve Compression SyndromesPhenylephrineUltrasonography, DopplerTreatment OutcomeJejunostomyRats, Sprague-DawleyRegional Blood FlowAcetylcholineVisceraVertebral ArteryStentsTime FactorsIntestinesAneurysm, DissectingBlood Vessel Prosthesis ImplantationCoronary Artery BypassVascular Surgical ProceduresAneurysm, FalseBlood PressureAbdominal PainNitric OxideAorta, AbdominalRats, Inbred WKYRadial ArteryMyographyStockings, CompressionMammary ArteriesIntestine, SmallMuscle ContractionArterial Occlusive DiseasesDose-Response Relationship, DrugPortal VeinCarotid Artery, InternalSubclavian ArteryMesenteryEnterostomyPotassium ChlorideFractures, CompressionEndovascular ProceduresMuscle RelaxationCarotid Artery DiseasesCoronary VesselsBrachial ArteryAneurysm, RupturedBlood Flow VelocityVascular DiseasesSuperior ColliculiAortic Aneurysm, AbdominalEmbolismNG-Nitroarginine Methyl EsterDogsAnastomosis, SurgicalVena Cava, SuperiorVascular ResistanceCarotid Artery, CommonEndothelium-Dependent Relaxing FactorsAortographyAorta, ThoracicRetrospective StudiesAortaEmbolization, TherapeuticIndomethacin