Balloon ValvuloplastyCatheterizationMitral Valve StenosisPulmonary Valve StenosisAortic Valve StenosisRheumatic Heart DiseaseMitral ValvePulmonary ValveAortic ValveCardiac CatheterizationHeart Valve Prosthesis ImplantationFollow-Up StudiesAtrial SeptumAortic Valve ProlapseHemodynamicsMitral Valve InsufficiencyTricuspid Valve StenosisEchocardiographyFetal TherapiesVenous InsufficiencyHeart Valve ProsthesisTreatment OutcomePregnancy Complications, CardiovascularHypoplastic Left Heart SyndromeEchocardiography, DopplerFemoral VeinMitral Valve AnnuloplastyEchocardiography, TransesophagealAortic Valve InsufficiencyNoonan SyndromePulmonary AtresiaEndocardial FibroelastosisBioprosthesisBalloon OcclusionInfant, NewbornPulmonary Valve InsufficiencyPostoperative ComplicationsFetoscopyAtrial Function, LeftEchocardiography, Doppler, ColorHeart Defects, CongenitalCyanosisPostoperative PeriodRecurrenceHeart Valve DiseasesVaricose VeinsRetrospective StudiesReoperationTricuspid Valve InsufficiencyCardiac Surgical ProceduresHeart AtriaHeart-Assist DevicesTime FactorsFetal HeartTricuspid ValveAngioplasty, BalloonPlethysmographyBlood PressurePalliative CareSeverity of Illness IndexSurvival RateShock, CardiogenicVascular Surgical ProceduresCardiac OutputExercise ToleranceAngioplasty, Balloon, CoronaryEvaluation Studies as TopicHeart DiseasesProsthesis DesignChi-Square DistributionPulmonary ArteryStroke VolumeProspective StudiesPregnancy OutcomePregnancyHeart VentriclesSystoleVentricular Function, LeftSurvival AnalysisPrognosisDisease-Free SurvivalRisk FactorsPredictive Value of TestsProportional Hazards Models