Brachial ArteryArteriesVasodilationForearmRegional Blood FlowEndothelium, VascularNitroglycerinHyperemiaCarotid ArteriesRadial ArteryPulmonary ArteryFemoral ArteryBlood Flow VelocityCerebral ArteriesRenal ArteryVasodilator AgentsMesenteric ArteriesCarotid Artery, CommonAxillary ArteryBasilar ArteryUlnar ArteryUltrasonography, DopplerBlood PressureSubclavian ArteryUltrasonography, Doppler, PulsedIliac ArteryCoronary Artery BypassVertebral ArteryMammary ArteriesCarotid Artery DiseasesPlethysmographyComplianceCarotid Artery, InternalArmPulsatile FlowCoronary VesselsTime FactorsVasoconstrictionSplenic ArteryTreatment OutcomeCatheterization, PeripheralRisk FactorsCross-Over StudiesHepatic Arteryomega-N-MethylarginineAngiographyProspective StudiesNitroprussideDilatation, PathologicPopliteal ArteryInfusions, Intra-ArterialArteriovenous Shunt, SurgicalCeliac ArteryOphthalmic ArteryArterial Occlusive DiseasesNitric OxideHemodynamicsVascular ResistanceMesenteric Artery, SuperiorCoronary AngiographyDouble-Blind MethodReproducibility of ResultsVascular DiseasesAnalysis of VarianceFollow-Up StudiesCoronary DiseaseReference ValuesUmbilical ArteriesMiddle Cerebral ArteryExerciseRenal Artery ObstructionThoracic ArteriesHeart RateLaser-Doppler FlowmetryMuscle, Smooth, VascularAtherosclerosisTemporal ArteriesAneurysmCardiovascular DiseasesTunica MediaBronchial ArteriesVascular PatencyCrutchesAneurysm, FalsePulseAcetylcholineInjections, Intra-ArterialVeinsVasoconstrictor AgentsAdministration, SublingualHypertensionVasomotor SystemHand StrengthBiological MarkersHemorheologyUterine ArteryTomography, X-Ray ComputedArteriosclerosisStentsPredictive Value of Tests