Pulmonary ValvePulmonary Valve StenosisPulmonary Valve InsufficiencyAortic ValveTetralogy of FallotHeart Valve DiseasesMitral ValveTricuspid ValvePulmonary AtresiaAnimals, Inbred StrainsAortic Valve StenosisVentricular Outflow ObstructionBioprosthesisHeart Valve Prosthesis ImplantationAortic Valve InsufficiencyCatheterizationHeart Valve ProsthesisCarcinoid Heart DiseaseCardiac CatheterizationHeart Septal Defects, VentricularCardiac Valve AnnuloplastyBalloon ValvuloplastyHeart Defects, CongenitalEchocardiographyPulmonary Subvalvular StenosisPulmonary ArteryTricuspid Valve InsufficiencyVentricular Function, RightMitral Valve InsufficiencyCardiac Surgical ProceduresEndocarditisHeart ValvesMitral Valve ProlapseEndocarditis, BacterialMitral Valve StenosisVenous ValvesEchocardiography, DopplerProsthesis DesignNoonan SyndromeTricuspid Valve StenosisTreatment OutcomeVentricular Dysfunction, RightFetal HeartTricuspid AtresiaHeart VentriclesOligohydramniosReoperationProlapseFollow-Up StudiesHemodynamicsInfant, NewbornUltrasonography, PrenatalEchocardiography, Doppler, ColorEchocardiography, TransesophagealFibromaHeart Septal DefectsVentricular SeptumHeart SeptumEndocarditis, Subacute BacterialRetrospective StudiesHypertrophy, Right VentricularBlood PressureDuctus ArteriosusAbnormalities, MultipleFetal DiseasesHeart NeoplasmsMitral Valve AnnuloplastyHeart Septal Defects, AtrialTime FactorsPostoperative ComplicationsEchocardiography, Three-DimensionalTransposition of Great VesselsPericardiumFetoscopyBlood Flow VelocitySinus of ValsalvaDilatationAortic CoarctationFeasibility StudiesAngiographyProspective Studies