Mesenteric Artery, InferiorMesenteric Artery, SuperiorMesenteric ArteriesMesenteric Vascular OcclusionArteriesCeliac ArterySuperior Mesenteric Artery SyndromeBronchial ArteriesPulmonary ArteryBronchopulmonary SequestrationFemoral ArteryVasodilationSplanchnic CirculationRenal ArteryHemoptysisDuodenostomyAneurysmTomography, X-Ray ComputedAortic Aneurysm, AbdominalBlood Vessel Prosthesis ImplantationCerebral ArteriesSplenic ArteryCarotid ArteriesEndothelium, VascularMesenteric VeinsAorta, AbdominalVasoconstrictionUltrasonography, DopplerMuscle, Smooth, VascularBasilar ArteryHepatic ArteryEmbolization, TherapeuticEndoleakColitis, IschemicIschemiaIliac ArteryRetroperitoneal SpaceVasoconstrictor AgentsAngiographyStentsVasodilator AgentsRegional Blood FlowAortographyTreatment OutcomeVertebral ArteryCoronary Artery BypassBiological FactorsRadial ArteryMammary ArteriesNorepinephrineRats, WistarCarotid Artery, InternalPhenylephrineSubclavian ArteryAcetylcholineReperfusion InjuryPostoperative ComplicationsConstriction, PathologicCarotid Artery DiseasesRats, Sprague-DawleyDuodenal ObstructionCoronary VesselsBrachial ArteryBlood PressureMyographyRenal VeinsRetrospective StudiesTime FactorsNitric OxideSheepRats, Inbred WKYCarotid Artery, CommonUterusArterial Occlusive DiseasesMuscle ContractionDose-Response Relationship, DrugVascular Surgical ProceduresVisceraAneurysm, DissectingJejunostomyMuscle RelaxationLaparoscopyAneurysm, FalseOphthalmic ArteryRenal Artery ObstructionVena Cava, InferiorIntestinesPotassium ChlorideUmbilical ArteriesMiddle Cerebral ArteryDogsThoracic ArteriesPortal VeinAbdominal PainNG-Nitroarginine Methyl EsterTemporal ArteriesIntestine, SmallEndothelium-Dependent Relaxing FactorsAneurysm, RupturedAorta