Brachial ArteryArteriesVasodilationForearmRegional Blood FlowPostoperative ComplicationsEndothelium, VascularNitroglycerinHyperemiaCarotid ArteriesRadial ArteryFemoral ArteryPulmonary ArteryRenal ArteryBlood Flow VelocityCerebral ArteriesVasodilator AgentsMesenteric ArteriesAxillary ArteryTreatment OutcomeCarotid Artery, CommonBasilar ArteryUlnar ArterySubclavian ArteryUltrasonography, DopplerBlood PressureIliac ArteryCoronary Artery BypassVertebral ArteryUltrasonography, Doppler, PulsedTime FactorsRetrospective StudiesMammary ArteriesRisk FactorsCarotid Artery DiseasesCarotid Artery, InternalFollow-Up StudiesProspective StudiesCompliancePlethysmographyCatheterization, PeripheralArmCoronary VesselsIntraoperative ComplicationsAngiographyPulsatile FlowHepatic ArterySplenic ArteryVasoconstrictionArteriovenous Shunt, SurgicalVascular Diseasesomega-N-MethylarginineTomography, X-Ray ComputedArterial Occlusive DiseasesPopliteal ArteryDilatation, PathologicInfusions, Intra-ArterialAneurysm, FalseStentsCross-Over StudiesCeliac ArteryNitroprussideCoronary AngiographyMesenteric Artery, SuperiorHemodynamicsOphthalmic ArteryNitric OxideAneurysmVascular ResistanceCoronary DiseaseVascular PatencyRenal Artery ObstructionUmbilical ArteriesMiddle Cerebral ArteryThoracic ArteriesCardiovascular DiseasesDouble-Blind MethodTemporal ArteriesAtherosclerosisVeinsVascular Surgical ProceduresMuscle, Smooth, VascularHemostatic TechniquesAnastomosis, SurgicalLaser-Doppler FlowmetryInjections, Intra-ArterialReference ValuesHypertensionBronchial ArteriesCatheterizationHeart RateTunica MediaAngioplasty, BalloonExerciseDiabetes ComplicationsAnalysis of VarianceRisk AssessmentVasoconstrictor AgentsCrutchesIschemia