Femoral ArteryRadial ArteryArteriesUlnar ArteryCatheterization, PeripheralArterial Occlusive DiseasesSpasmCathetersHemostatic TechniquesCardiac CatheterizationAngioplasty, Balloon, CoronaryPercutaneous Coronary InterventionCarotid ArteriesPulmonary ArteryIliac ArteryCoronary AngiographyCardiac CathetersPuncturesVascular System InjuriesTreatment OutcomeRenal ArteryStentsAngiographyBrachial ArteryCerebral ArteriesMesenteric ArteriesLeriche SyndromeRadiography, InterventionalSubclavian ArteryVascular Access DevicesFeasibility StudiesCoronary Artery BypassBasilar ArteryConstriction, PathologicArtificial LimbsCoronary VesselsAngioplastyVascular PatencyPopliteal ArteryCatheterizationIschemiaTime FactorsRegional Blood FlowVertebral ArteryHindlimbAneurysm, FalseAngioplasty, BalloonHemorrhageMammary ArteriesCarotid Artery, CommonLigationCarotid Artery DiseasesAlloysMuscle, Smooth, VascularIsosorbideCarotid Artery, InternalEarly Termination of Clinical TrialsLearning CurveCoronary StenosisProspective StudiesFluoroscopyVasodilationMyocardial InfarctionVasoconstrictionRetrospective StudiesUltrasonography, InterventionalLegHepatic ArteryAneurysmSplenic ArteryTime-to-TreatmentFemoral VeinNitroglycerinEquipment DesignHemostasis, SurgicalEndothelium, VascularEquipment FailureCoronary DiseaseBlood PressureBlood Vessel Prosthesis ImplantationVasodilator AgentsCeliac ArteryBlood Vessel ProsthesisCoronary OcclusionRisk FactorsUltrasonography, Doppler, DuplexPeripheral Arterial DiseaseOphthalmic ArteryMesenteric Artery, SuperiorDogsCollateral CirculationTunica IntimaInjections, Intra-ArterialCoronary Artery DiseaseIntermittent ClaudicationUmbilical ArteriesEndarterectomyFollow-Up StudiesMiddle Cerebral ArteryRenal Artery Obstruction