Mesenteric ArteriesMesenteric Artery, SuperiorAneurysmIntracranial AneurysmMesenteric Artery, InferiorAneurysm, InfectedArteriesAortic AneurysmAortic Aneurysm, ThoracicHeart AneurysmAneurysm, DissectingCeliac ArteryEmbolization, TherapeuticMesenteric Vascular OcclusionSuperior Mesenteric Artery SyndromeRenal ArteryIliac AneurysmBlood Vessel Prosthesis ImplantationPulmonary ArteryCerebral ArteriesTomography, X-Ray ComputedAneurysm, FalseCoronary AneurysmCerebral AngiographyFemoral ArteryBasilar ArteryAorta, AbdominalCarotid ArteriesIliac ArteryMuscle, Smooth, VascularBlood Vessel ProsthesisVasodilationSplenic ArteryAortic RuptureTreatment OutcomeVasoconstrictionSplanchnic CirculationVascular Surgical ProceduresEndovascular ProceduresStentsVertebral ArteryAngiography, Digital SubtractionAortographyAngiographyCarotid Artery, InternalMesenteric VeinsSubarachnoid HemorrhageBiological FactorsCarotid Artery DiseasesVasoconstrictor AgentsVasodilator AgentsHepatic ArterySubclavian ArteryEndothelium, VascularCoronary Artery BypassTime FactorsNorepinephrineRadial ArteryPostoperative ComplicationsMammary ArteriesSurgical InstrumentsFollow-Up StudiesPhenylephrineRetrospective StudiesMyographyRats, WistarCarotid Artery, CommonAcetylcholineDuodenostomyBlood PressureCoronary VesselsRats, Sprague-DawleyOphthalmic ArteryBrachial ArteryAorta, ThoracicPopliteal ArteryProsthesis DesignRats, Inbred WKYMuscle ContractionArterial Occlusive DiseasesMuscle RelaxationDose-Response Relationship, DrugNitric OxideVena Cava, SuperiorAngioplastySuperior ColliculiMiddle Cerebral ArteryAortaRenal Artery ObstructionEndothelium-Dependent Relaxing FactorsTemporal ArteriesAnastomosis, SurgicalRegional Blood FlowEndoleakDogsVascular PatencyLigationConstriction, PathologicRats, Inbred SHRRabbits