Aortic Valve StenosisCatheterizationAortic Valve ProlapseAortic Valve InsufficiencyAortic Stenosis, SupravalvularAortic ValveHeart Valve Prosthesis ImplantationAortic Stenosis, SubvalvularCarotid StenosisHeart Valve ProsthesisCardiac CatheterizationCoronary StenosisSpinal StenosisPulmonary Valve StenosisTracheal StenosisMitral Valve StenosisEchocardiography, DopplerEchocardiographyCalcinosisConstriction, PathologicPyloric StenosisSeverity of Illness IndexBioprosthesisHemodynamicsTreatment OutcomeWilliams SyndromeHypertrophy, Left VentricularFollow-Up StudiesStroke VolumeVentricular Function, LeftDiscrete Subaortic StenosisBlood Flow VelocityProspective StudiesTricuspid Valve StenosisAngiodysplasiaHeart Valve DiseasesBalloon ValvuloplastyRetrospective StudiesPhonocardiographyCoronary AngiographyPredictive Value of TestsRenal Artery ObstructionVentricular Dysfunction, LeftStentsHeart MurmursHeart VentriclesProsthesis DesignEndocardial FibroelastosisAngiographyPostoperative ComplicationsAngioplasty, BalloonRisk FactorsMitral ValveTime FactorsTomography, X-Ray ComputedElectrocardiographyCarotid Artery, InternalCoronary CirculationSystoleEndarterectomy, CarotidAsymptomatic DiseasesArterial Occlusive DiseasesElastinUltrasonography, Doppler, DuplexMagnetic Resonance AngiographyLaryngostenosisModels, CardiovascularBlood PressureMultidetector Computed TomographyProsthesis FittingMitral Valve Insufficiency