Aortic Valve StenosisAortic ValveHeart ValvesHeart Valve ProsthesisHeart Valve DiseasesHeart Valve Prosthesis ImplantationAortic Valve InsufficiencyPulmonary Valve StenosisMitral ValveBioprosthesisCalcinosisMitral Valve StenosisCardiac CatheterizationPulmonary ValveTricuspid Valve StenosisCatheterizationEchocardiographyTricuspid ValveProsthesis DesignEchocardiography, DopplerHeartTreatment OutcomeMitral Valve InsufficiencySeverity of Illness IndexEchocardiography, TransesophagealBalloon ValvuloplastyHemodynamicsBloodless Medical and Surgical ProceduresHypoplastic Left Heart SyndromeCarotid StenosisEchocardiography, Doppler, ColorAngiodysplasiaEndocarditis, BacterialMitral Valve ProlapseFollow-Up StudiesHeart Defects, CongenitalVentricular Function, LeftEndocarditisBlood Flow VelocityProspective StudiesTime FactorsVenous ValvesCoronary StenosisVentricular Outflow ObstructionHeart RateRetrospective StudiesSpinal StenosisRisk FactorsHeart VentriclesAortaTricuspid Valve InsufficiencyAortic Valve ProlapseVentricular Dysfunction, LeftRheumatic Heart DiseaseStroke VolumeTracheal StenosisRisk AssessmentPhonocardiographyPredictive Value of TestsCardiac Valve AnnuloplastyObserver VariationPulmonary Subvalvular StenosisMitral Valve AnnuloplastyDisease ProgressionHeart FailureConstriction, PathologicProsthesis FailureDiastolePyloric StenosisEchocardiography, Three-DimensionalHypertrophy, Left VentricularInfant, NewbornPostoperative ComplicationsCardiac Surgical ProceduresReoperationDiscrete Subaortic StenosisHeart DiseasesReproducibility of ResultsAortic CoarctationAortic AneurysmModels, CardiovascularThromboembolismHeart Septal Defects, VentricularBlood PressureMultidetector Computed TomographyNoonan SyndromeFeasibility StudiesAortic Stenosis, SubvalvularTomography, X-Ray ComputedTissue EngineeringThoracotomyAnticoagulantsChordae TendineaeHeart SoundsStentsDilatation, PathologicPericardiumEndocardial Cushions