Aortic Valve InsufficiencyMitral Valve InsufficiencyAortic ValveHeart Valve Prosthesis ImplantationHeart Valve ProsthesisEchocardiography, Doppler, ColorTricuspid Valve InsufficiencyMitral ValveAortic Valve StenosisEchocardiographyEchocardiography, DopplerAortic Valve ProlapseHeart Valve DiseasesEchocardiography, TransesophagealAortic AneurysmPulmonary Valve InsufficiencyCardiac CatheterizationRheumatic Heart DiseasePhonocardiographyDiscrete Subaortic StenosisBioprosthesisSyphilis, CardiovascularMitral Valve AnnuloplastySinus of ValsalvaStroke VolumeCardiac Valve AnnuloplastyCardiac Surgical ProceduresVentricular Function, LeftChordae TendineaeAortitisDexfenfluramineDilatation, PathologicMitral Valve ProlapsePulmonary ValveTreatment OutcomeHeart SoundsSeverity of Illness IndexEchocardiography, Three-DimensionalFollow-Up StudiesTakayasu ArteritisHeart MurmursMarfan SyndromeTricuspid ValveFenfluramineHeart Septal Defects, VentricularVentricular Dysfunction, LeftHeart VentriclesHemodynamicsTetralogy of FallotReoperationAngiocardiographyPhentermineMitral Valve StenosisBlood Flow VelocityCatheterizationVentricular RemodelingEndocarditis, Bacterial