Aortic Stenosis, SubvalvularAortic Valve StenosisAortic Stenosis, SupravalvularMitral ValveAortic ValveChordae TendineaeMitral Valve StenosisHeart Valve ProsthesisHeart Valve Prosthesis ImplantationPulmonary Subvalvular StenosisMitral Valve InsufficiencyCardiac CatheterizationCarotid StenosisCatheterizationEchocardiographyMitral Valve AnnuloplastyCoronary StenosisHemodynamicsSpinal StenosisPulmonary Valve StenosisTracheal StenosisTreatment OutcomeEchocardiography, TransesophagealEchocardiography, DopplerCardiomyopathy, HypertrophicAortic Valve InsufficiencyHeart VentriclesCalcinosisConstriction, PathologicPyloric StenosisSeverity of Illness IndexBioprosthesisWilliams 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 MurmursProsthesis DesignEndocardial FibroelastosisAngiographyPostoperative ComplicationsAngioplasty, BalloonRisk FactorsTime FactorsTomography, X-Ray ComputedElectrocardiographyCarotid Artery, InternalCoronary CirculationSystoleEndarterectomy, CarotidAsymptomatic DiseasesArterial Occlusive DiseasesElastinUltrasonography, Doppler, DuplexMagnetic Resonance AngiographyLaryngostenosisModels, CardiovascularBlood PressureMultidetector Computed TomographyProsthesis FittingRisk AssessmentKinetocardiographySensitivity and SpecificityHeart AuscultationHeart Defects, CongenitalEchocardiography, StressCardiomegalyCoronary DiseaseVentricular RemodelingAortic CoarctationPrognosisEchocardiography, Doppler, ColorAngiocardiographyAortographyPyloric Stenosis, HypertrophicCardiac OutputFetal TherapiesVentricular PressureObserver VariationArterial PressureDisease ProgressionPostoperative PeriodHeart SoundsCoronary VesselsAzetidines