Aortic Valve StenosisAortic ValveHeart Valve Prosthesis ImplantationAortic Valve InsufficiencyPulmonary Valve StenosisHeart Valve ProsthesisHeart Valve DiseasesCardiac CatheterizationCalcinosisMitral ValveMitral Valve StenosisTricuspid Valve StenosisBioprosthesisCatheterizationEchocardiographyPulmonary ValveEchocardiography, DopplerSeverity of Illness IndexTreatment OutcomeProsthesis DesignBloodless Medical and Surgical ProceduresCarotid StenosisHypoplastic Left Heart SyndromeBalloon ValvuloplastyEchocardiography, TransesophagealAngiodysplasiaHemodynamicsTricuspid ValveEchocardiography, Doppler, ColorFollow-Up StudiesCoronary StenosisBlood Flow VelocityProspective StudiesVentricular Function, LeftVentricular Outflow ObstructionSpinal StenosisMitral Valve InsufficiencyHeart VentriclesTracheal StenosisTime FactorsHeart Defects, CongenitalAortaRetrospective StudiesAortic Valve ProlapseVentricular Dysfunction, LeftRisk AssessmentStroke VolumeRisk FactorsObserver VariationPulmonary Subvalvular StenosisPredictive Value of TestsEndocarditis, BacterialMitral Valve ProlapseConstriction, PathologicPyloric StenosisDisease ProgressionRheumatic Heart DiseaseMultidetector Computed TomographyPhonocardiographyDiscrete Subaortic StenosisDiastoleHypertrophy, Left VentricularInfant, NewbornCardiac Valve AnnuloplastyVenous ValvesBlood PressureEchocardiography, Three-DimensionalAortic CoarctationEndocarditisPostoperative ComplicationsReproducibility of ResultsAortic AneurysmNoonan SyndromeProsthesis FailureAortic Stenosis, SubvalvularHeart Septal Defects, VentricularTricuspid Valve InsufficiencyReoperationTomography, X-Ray ComputedThoracotomy