Mesenteric ArteriesMesenteric Artery, SuperiorAortic DiseasesMesenteric Artery, InferiorConstrictionHypertensionAorta, AbdominalArterial Occlusive DiseasesArteriesSpinal Cord IschemiaHypertension, PulmonaryBlood PressureBalloon OcclusionParaplegiaMesenteric Vascular OcclusionEmbolectomyPulmonary ArteryIschemiaVena Cava, InferiorEndarterectomyAorta, ThoracicCeliac ArterySuperior Mesenteric Artery SyndromeRenal ArteryAortaTime FactorsCerebral ArteriesAortographyHemodynamicsReperfusion InjuryHypertension, PortalTreatment OutcomeVasodilationHypertension, RenalFemoral ArteryVasoconstrictionRegional Blood FlowCarotid ArteriesMuscle, Smooth, VascularDogsReperfusionInferior ColliculiRats, Sprague-DawleyIschemic PreconditioningBlood VolumeSplanchnic CirculationVasodilator AgentsAntihypertensive AgentsBasilar ArteryHypertension, RenovascularDisease Models, AnimalVasoconstrictor AgentsRetinal Artery OcclusionCatheterizationMesenteric VeinsAortic Aneurysm, AbdominalEndothelium, VascularIliac ArteryCoronary OcclusionCarotid Artery, InternalRats, Inbred WKYBiological FactorsSpinal CordNorepinephrineVertebral ArteryRats, Inbred SHRRats, WistarSplenic ArteryAngiographyAcute DiseaseTomography, X-Ray ComputedHypertension, MalignantRetinal Vein OcclusionCarotid Artery DiseasesSwinePhenylephrineHepatic ArteryCoronary Artery BypassNitric OxideCoronary VesselsAcetylcholineRadial ArteryVascular ResistanceRisk FactorsRenal Artery ObstructionMyographyInfarction, Middle Cerebral ArterySubclavian ArteryDose-Response Relationship, DrugMammary ArteriesConstriction, PathologicFollow-Up StudiesDesoxycorticosteroneBrachial ArteryStentsEmbolization, TherapeuticRetrospective StudiesMuscle ContractionCarotid Artery, CommonProspective Studies