Renal CirculationRenal ArterySplanchnic CirculationKidneyArteriesVasoconstrictionRegional Blood FlowVascular ResistanceHemodynamicsReninBlood PressureVasodilationNitric OxidePulmonary ArteryAngiotensin IICarotid ArteriesCerebral ArteriesFemoral ArteryMesenteric ArteriesBlood CirculationBasilar ArteryVertebral ArteryCoronary Artery BypassIliac ArteryRadial ArteryMammary ArteriesCarotid Artery, InternalSubclavian ArteryPulmonary CirculationExtracorporeal CirculationCarotid Artery DiseasesSplenic ArteryBrachial ArteryCoronary VesselsHepatic ArteryCarotid Artery, CommonOphthalmic ArteryCeliac ArteryCoronary CirculationMesenteric Artery, SuperiorUmbilical ArteriesMiddle Cerebral ArteryBronchial ArteriesCerebrovascular CirculationRenal Artery ObstructionThoracic ArteriesTemporal ArteriesUlnar ArteryUterine ArteryPopliteal ArteryCollateral CirculationCoronary AngiographyCarotid Artery, ExternalTime FactorsAngiographyArterial Occlusive DiseasesPlacental CirculationMuscle, Smooth, VascularEndothelium, VascularVasodilator AgentsTreatment OutcomeEnterohepatic CirculationCarotid Artery InjuriesCoronary DiseaseTomography, X-Ray ComputedDogsInfarction, Middle Cerebral ArteryRetinal Artery OcclusionCerebral AngiographyStentsAxillary ArteryCarotid Artery ThrombosisMagnetic Resonance AngiographyCarotid StenosisAneurysmVasoconstrictor AgentsLiver CirculationMeningeal ArteriesBlood Circulation TimeUltrasonography, DopplerVertebrobasilar InsufficiencySwineConstriction, PathologicFollow-Up StudiesProspective StudiesAngioplasty, BalloonEmbolization, TherapeuticPulsatile FlowAngiography, Digital SubtractionMyocardial InfarctionRabbitsIntracranial AneurysmRisk FactorsCarotid Artery, Internal, DissectionMaxillary ArteryCoronary StenosisRats, Sprague-DawleyRetrospective StudiesVascular PatencyCoronary Artery Bypass, Off-Pump