Mesenteric Vascular OcclusionMesenteric Artery, SuperiorMesenteric ArteriesIschemiaMesenteric Artery, InferiorMesenteryCeliac ArteryMesenteric VeinsSplanchnic CirculationVascular DiseasesArteriesAngiographyMyocardial IschemiaBrain IschemiaReperfusion InjuryIntestinesAngioplasty, BalloonVascular Surgical ProceduresTomography, X-Ray ComputedEmbolismSuperior Mesenteric Artery SyndromeEmbolectomyAbdominal PainEndovascular ProceduresConstriction, PathologicTime FactorsIntestine, SmallPulmonary ArteryRats, WistarVasodilator AgentsTreatment OutcomeStentsRenal ArteryCerebral ArteriesRetrospective StudiesFemoral ArteryArterial Occlusive DiseasesChronic DiseaseVasodilationCarotid ArteriesVascular PatencyMuscle, Smooth, VascularAcute DiseaseVasoconstrictionDigestive System Surgical ProceduresEndarterectomyBlood Vessel Prosthesis ImplantationUltrasonography, Doppler, DuplexIschemic PreconditioningBasilar ArteryAneurysm, DissectingRats, Sprague-DawleyDuodenal NeoplasmsIntestinal MucosaAortic AneurysmBiological FactorsAngioplastyVasoconstrictor AgentsIliac ArteryEndothelium, VascularSplenic ArteryNorepinephrineCoronary Artery BypassHepatic ArteryVertebral ArteryRisk FactorsDuodenostomyThrombosisDuodenal DiseasesPhenylephrineDogsAcetylcholineRecurrenceDose-Response Relationship, DrugBlood PressureRadial ArteryDuodenal ObstructionCoronary VesselsMyographyMuscle ContractionPostoperative ComplicationsCarotid Artery, InternalFollow-Up StudiesMammary ArteriesFatal OutcomeNitric OxideMuscle RelaxationSubclavian ArteryDisease Models, AnimalCardiopulmonary BypassIschemic Attack, TransientMyocardial Reperfusion InjuryRabbitsRegional Blood FlowRats, Inbred WKYCarotid Artery DiseasesPredictive Value of TestsBrachial ArteryEarly DiagnosisInfarction, Middle Cerebral Artery