Safety-Based Drug WithdrawalsHeart Valve DiseasesHeart ValvesAortic ValveHypoplastic Left Heart SyndromeHeart Valve ProsthesisMitral ValveAortic Valve StenosisAortic Valve InsufficiencyBioprosthesisHeartHeart Valve Prosthesis ImplantationMitral Valve InsufficiencyHeart Bypass, LeftMitral Valve StenosisPulmonary ValveTricuspid ValveRheumatic Heart DiseaseHeart Defects, CongenitalMitral Valve ProlapseEchocardiographyCalcinosisTricuspid Valve InsufficiencyHeart RateCardiac CatheterizationCardiac Surgical ProceduresNorwood ProceduresFetal HeartHeart DiseasesEndocardial FibroelastosisEndocarditis, BacterialHeart AtriaVentricular Function, LeftEndocarditisHeart FailureVenous ValvesHemodynamicsEchocardiography, DopplerTreatment OutcomeHeart VentriclesVentricular Dysfunction, LeftProsthesis DesignChordae TendineaeCardiac Valve AnnuloplastyEchocardiography, TransesophagealTime FactorsFollow-Up Studies