Brachial ArteryArteriesVasodilationForearmRegional Blood FlowEndothelium, VascularNitroglycerinHyperemiaCarotid ArteriesRadial ArteryPulmonary ArteryFemoral ArteryCerebral ArteriesBlood Flow VelocityRenal ArteryVasodilator AgentsMesenteric ArteriesCarotid Artery, CommonAxillary ArteryBasilar ArteryUlnar ArteryUltrasonography, DopplerSubclavian ArteryBlood PressureIliac ArteryUltrasonography, Doppler, PulsedVertebral ArteryCoronary Artery BypassMammary ArteriesCarotid Artery DiseasesCarotid Artery, InternalCompliancePlethysmographyArmPulsatile FlowCoronary VesselsSplenic ArteryVasoconstrictionCatheterization, PeripheralHepatic Arteryomega-N-MethylarginineAngiographyCross-Over StudiesNitroprussideDilatation, PathologicPopliteal ArteryInfusions, Intra-ArterialTime FactorsArteriovenous Shunt, SurgicalCeliac ArteryOphthalmic ArteryArterial Occlusive DiseasesMesenteric Artery, SuperiorNitric OxideVascular ResistanceTreatment OutcomeHemodynamicsCoronary AngiographyVascular DiseasesRisk FactorsUmbilical ArteriesMiddle Cerebral ArteryRenal Artery ObstructionThoracic ArteriesCoronary DiseaseMuscle, Smooth, VascularTemporal ArteriesAneurysmLaser-Doppler FlowmetryBronchial ArteriesAtherosclerosisVascular PatencyCrutchesAneurysm, FalseTunica MediaProspective StudiesExerciseInjections, Intra-ArterialHeart RateAcetylcholineDouble-Blind MethodPulseVasoconstrictor AgentsVeinsAdministration, SublingualReference ValuesVasomotor SystemCardiovascular DiseasesUterine ArteryHemorheologyStentsHypertensionArteriosclerosisFollow-Up StudiesAnalysis of VarianceHand StrengthCarotid Artery, ExternalSubclavian Steal SyndromeTunica IntimaBlood Pressure Determination