Mesenteric Vascular OcclusionMesenteric Artery, SuperiorIschemiaMesenteric ArteriesVascular DiseasesMesenteryMesenteric VeinsEmbolectomyMesenteric Artery, InferiorEmbolismCeliac ArteryAcute DiseaseSplanchnic CirculationArteriesAngiographyMyocardial IschemiaBrain IschemiaReperfusion InjuryAngioplasty, BalloonVascular Surgical ProceduresIntestinesTomography, X-Ray ComputedEndovascular ProceduresSuperior Mesenteric Artery SyndromeAbdominal PainConstriction, PathologicTime FactorsPulmonary ArteryVasodilator AgentsRenal ArteryStentsTreatment OutcomeCerebral ArteriesRats, WistarFemoral ArteryArterial Occlusive DiseasesVasodilationRetrospective StudiesCarotid ArteriesVascular PatencyChronic DiseaseIntestine, SmallMuscle, Smooth, VascularVasoconstrictionEndarterectomyBlood Vessel Prosthesis ImplantationUltrasonography, Doppler, DuplexIschemic PreconditioningDigestive System Surgical ProceduresBasilar ArteryAneurysm, DissectingAortic AneurysmAngioplastyBiological FactorsVasoconstrictor AgentsRats, Sprague-DawleyIliac ArteryEndothelium, VascularSplenic ArteryNorepinephrineCoronary Artery BypassHepatic ArteryVertebral ArteryThrombosisRisk FactorsPhenylephrineRadial ArteryRecurrenceMyographyCoronary VesselsBlood PressureAcetylcholineMammary ArteriesCarotid Artery, InternalSubclavian ArteryFollow-Up StudiesCardiopulmonary BypassNitric OxidePostoperative ComplicationsIntestinal MucosaDose-Response Relationship, DrugIschemic Attack, TransientMyocardial Reperfusion InjuryFatal OutcomeDuodenostomyDisease Models, AnimalDogsRats, Inbred WKYRegional Blood FlowCarotid Artery DiseasesMuscle ContractionMuscle RelaxationBrachial ArteryPredictive Value of TestsEarly DiagnosisInfarction, Middle Cerebral ArteryReperfusionRisk AssessmentRabbitsCarotid Artery, Common