Carotid StenosisAortic Valve StenosisCoronary StenosisSpinal StenosisTracheal StenosisAccessory NervePyloric StenosisMitral Valve StenosisConstriction, PathologicPulmonary Valve StenosisRenal Artery ObstructionWolff-Parkinson-White SyndromeAortic Stenosis, SubvalvularAccessory Atrioventricular BundleAortic Stenosis, SupravalvularStentsCoronary AngiographyInterleukin-1 Receptor Accessory ProteinCarotid Artery, InternalEndarterectomy, CarotidUltrasonography, Doppler, DuplexAngioplasty, BalloonLaryngostenosisAortic ValveAccessory Nerve InjuriesTricuspid Valve StenosisTreatment OutcomeDiscrete Subaortic StenosisAngiographyFollow-Up StudiesMagnetic Resonance AngiographyArterial Occlusive DiseasesPyloric Stenosis, HypertrophicSeverity of Illness IndexBlood Flow VelocityGenitalia, MaleAngiography, Digital SubtractionHeart Valve Prosthesis ImplantationCatheterizationEsophageal StenosisViral Regulatory and Accessory ProteinsCardiac CatheterizationTomography, X-Ray ComputedProspective StudiesIntracranial ArteriosclerosisAngioplastyGraft Occlusion, VascularRetrospective StudiesCoronary DiseaseCoronary CirculationPre-Excitation SyndromesSensitivity and SpecificityPredictive Value of TestsEchocardiographyRecurrenceCoronary VesselsTime FactorsHemodynamicsCerebral AngiographyVertebrobasilar InsufficiencyRenal ArteryFractional Flow Reserve, MyocardialCarotid Artery DiseasesCalcinosisPostoperative ComplicationsCarotid ArteriesVascular PatencyHeart Valve ProsthesisRisk FactorsElectrocardiographyAtrioventricular NodeHypertension, RenovascularCatheter AblationUltrasonography, Doppler, ColorIschemic Attack, TransientArteriovenous Shunt, SurgicalCoronary Artery DiseaseCerebrovascular DisordersVomeronasal OrganAccessory Nerve DiseasesIntracranial Arterial DiseasesEndarterectomyEchocardiography, DopplerRheumatic Heart DiseaseHeart Conduction SystemStrokeTachycardia, SupraventricularLumbar VertebraePulmonary Veno-Occlusive DiseaseCarotid Artery, ExternalDecompression, SurgicalUltrasonography, Doppler, TranscranialMitral ValveObserver VariationIliac ArteryUltrasonography, DopplerReproducibility of ResultsAortic Valve InsufficiencyAngioplasty, Balloon, CoronaryPulmonary Subvalvular Stenosis