Spinal StenosisSpinal CanalLumbar VertebraeDecompression, SurgicalSpondylolisthesisLaminectomySpinal FusionCarotid StenosisAortic Valve StenosisCoronary StenosisPostoperative ComplicationsTracheal StenosisFollow-Up StudiesPyloric StenosisMitral Valve StenosisConstriction, PathologicPulmonary Valve StenosisRenal Artery ObstructionAortic Stenosis, SubvalvularAortic Stenosis, SupravalvularStentsCoronary AngiographyCarotid Artery, InternalEndarterectomy, CarotidUltrasonography, Doppler, DuplexAngioplasty, BalloonLaryngostenosisAortic ValveTricuspid Valve StenosisDiscrete Subaortic StenosisTreatment OutcomeMagnetic Resonance AngiographyAngiographyArterial Occlusive DiseasesPyloric Stenosis, HypertrophicSeverity of Illness IndexBlood Flow VelocityHeart Valve Prosthesis ImplantationAngiography, Digital SubtractionCatheterizationEsophageal StenosisIntracranial ArteriosclerosisAngioplastyGraft Occlusion, VascularCardiac CatheterizationCoronary DiseaseProspective StudiesTomography, X-Ray ComputedCoronary CirculationRetrospective StudiesCoronary VesselsPredictive Value of TestsHemodynamicsVertebrobasilar InsufficiencySensitivity and SpecificityEchocardiographyFractional Flow Reserve, MyocardialCarotid Artery DiseasesCerebral AngiographyCalcinosisCarotid ArteriesVascular PatencyRecurrenceHeart Valve ProsthesisRisk FactorsHypertension, RenovascularUltrasonography, Doppler, ColorIschemic Attack, TransientArteriovenous Shunt, SurgicalRenal ArteryTime FactorsCoronary Artery DiseaseCerebrovascular DisordersIntracranial Arterial DiseasesEndarterectomyEchocardiography, DopplerRheumatic Heart DiseaseStrokePulmonary Veno-Occlusive DiseaseCarotid Artery, ExternalUltrasonography, Doppler, Transcranial