Mesenteric ArteriesMesenteric Artery, SuperiorAneurysmIntracranial AneurysmAorta, AbdominalMesenteric Artery, InferiorAortic DiseasesConstrictionArterial Occlusive DiseasesAneurysm, InfectedArteriesSpinal Cord IschemiaAortic AneurysmBalloon OcclusionParaplegiaAortographyAortic Aneurysm, ThoracicHeart AneurysmEmbolization, TherapeuticAneurysm, DissectingMesenteric Vascular OcclusionEmbolectomyCeliac ArteryIschemiaAorta, ThoracicTreatment OutcomeVena Cava, InferiorCerebral ArteriesCerebral AngiographyRenal ArteryIliac AneurysmBlood Vessel Prosthesis ImplantationEndarterectomySuperior Mesenteric Artery SyndromeTomography, X-Ray ComputedTime FactorsAortaPulmonary ArteryReperfusion InjuryFemoral ArteryAneurysm, FalseCoronary AneurysmBasilar ArteryBlood PressureIliac ArteryCarotid Artery, InternalReperfusionCarotid ArteriesDogsInferior ColliculiIschemic PreconditioningBlood Vessel ProsthesisHemodynamicsAngiographyRegional Blood FlowStentsVertebral ArteryVasodilationMuscle, Smooth, VascularAngiography, Digital SubtractionCatheterizationVascular Surgical ProceduresSplenic ArteryVasoconstrictionEndovascular ProceduresAortic RuptureSplanchnic CirculationCarotid Artery DiseasesBlood VolumeRats, Sprague-DawleyRetinal Artery OcclusionMesenteric VeinsSubarachnoid HemorrhageAortic Aneurysm, AbdominalDisease Models, AnimalCoronary OcclusionSpinal CordVasodilator AgentsVasoconstrictor AgentsSubclavian ArteryBiological FactorsHepatic ArteryAcute DiseaseEndothelium, VascularFollow-Up StudiesCoronary Artery BypassRetrospective StudiesSwinePostoperative ComplicationsRetinal Vein OcclusionRats, WistarCoronary VesselsSurgical InstrumentsNorepinephrineRadial ArteryCarotid Artery, CommonMammary ArteriesInfarction, Middle Cerebral ArteryPhenylephrineConstriction, Pathologic