Mesenteric ArteriesMesenteric Artery, SuperiorMesenteric Artery, InferiorAortic DiseasesConstrictionAorta, AbdominalArterial Occlusive DiseasesArteriesSpinal Cord IschemiaBalloon OcclusionParaplegiaMesenteric Vascular OcclusionEmbolectomyIschemiaVena Cava, InferiorCeliac ArteryEndarterectomyAorta, ThoracicSuperior Mesenteric Artery SyndromePulmonary ArteryAortographyReperfusion InjuryCerebral ArteriesAortaRenal ArteryBlood PressureReperfusionInferior ColliculiIschemic PreconditioningFemoral ArteryTime FactorsDogsCarotid ArteriesRegional Blood FlowVasodilationHemodynamicsTreatment OutcomeMuscle, Smooth, VascularVasoconstrictionBasilar ArteryBlood VolumeSplanchnic CirculationRats, Sprague-DawleyRetinal Artery OcclusionCatheterizationAortic Aneurysm, AbdominalIliac ArteryCoronary OcclusionMesenteric VeinsCarotid Artery, InternalSpinal CordVasodilator AgentsBiological FactorsVasoconstrictor AgentsVertebral ArteryDisease Models, AnimalEndothelium, VascularSplenic ArteryAcute DiseaseRetinal Vein OcclusionAngiographyHepatic ArterySwineCoronary Artery BypassRats, WistarTomography, X-Ray ComputedCarotid Artery DiseasesNorepinephrineCoronary VesselsRadial ArteryPhenylephrineInfarction, Middle Cerebral ArterySubclavian ArteryMammary ArteriesMyographyAcetylcholineConstriction, PathologicEmbolization, TherapeuticStentsRats, Inbred WKYBrachial ArteryMuscle ContractionDuodenostomyNitric OxideDose-Response Relationship, DrugCarotid Artery, CommonMuscle RelaxationMiddle Cerebral ArteryAneurysmCerebral AngiographyDental OcclusionBrain IschemiaOphthalmic ArteryRats, Inbred SHREndothelium-Dependent Relaxing FactorsRenal Artery ObstructionVascular PatencyCoronary AngiographyPopliteal ArteryLigation