Mesenteric ArteriesMesenteric Artery, SuperiorMesenteric Artery, InferiorArteriesMesenteric Vascular OcclusionCeliac ArterySuperior Mesenteric Artery SyndromePulmonary ArteryRenal ArteryCerebral ArteriesVasodilationMuscle, Smooth, VascularCarotid ArteriesFemoral ArteryVasoconstrictionSplanchnic CirculationBasilar ArteryCoronary Artery BypassMesenteric VeinsTreatment OutcomeBiological FactorsVasoconstrictor AgentsVasodilator AgentsIliac ArterySplenic ArteryEndothelium, VascularPostoperative ComplicationsNorepinephrineHepatic ArteryVertebral ArteryTime FactorsTomography, X-Ray ComputedRadial ArteryMammary ArteriesPhenylephrineMyographyRats, WistarCarotid Artery, InternalAcetylcholineDuodenostomySubclavian ArteryAngiographyRetrospective StudiesRats, Sprague-DawleyCarotid Artery DiseasesRats, Inbred WKYCoronary VesselsMuscle ContractionBlood PressureDose-Response Relationship, DrugMuscle RelaxationNitric OxideBrachial ArteryFollow-Up StudiesProspective StudiesVena Cava, SuperiorSuperior ColliculiCarotid Artery, CommonEndothelium-Dependent Relaxing FactorsBariatric SurgeryAneurysmVascular Surgical ProceduresArterial Occlusive DiseasesRenal Artery ObstructionStentsRats, Inbred SHRRegional Blood FlowOphthalmic ArteryConstriction, PathologicPotassium ChlorideDogsCharybdotoxin15-Hydroxy-11 alpha,9 alpha-(epoxymethano)prosta-5,13-dienoic AcidNG-Nitroarginine Methyl EsterGeneral SurgeryThoracic ArteriesRabbitsMiddle Cerebral ArteryCardiac Surgical ProceduresBlood Vessel Prosthesis ImplantationThoracic SurgeryUmbilical ArteriesUltrasonography, DopplerTemporal ArteriesAorta, AbdominalPopliteal ArteryAorta, ThoracicAortaPostoperative PeriodIndomethacinHypertensionBronchial ArteriesRisk FactorsNitroprussideCoronary AngiographyEnzyme InhibitorsNitric Oxide SynthaseUlnar ArteryVasomotor SystemVascular Resistance