Mitral Valve InsufficiencyMitral ValveAortic Valve InsufficiencyTricuspid Valve InsufficiencyPulmonary Valve InsufficiencyMitral Valve ProlapseVenous ValvesAortic ValveHeart Valve DiseasesMitral Valve StenosisHeartHeart Valve Prosthesis ImplantationPhenylisopropyladenosineCardiac Surgical ProceduresRubidium RadioisotopesHeart Valve ProsthesisMitral Valve AnnuloplastyHeart VentriclesVentricular FunctionMyocardiumChordae TendineaeAortic Valve StenosisTreatment OutcomeAdrenal InsufficiencyTricuspid ValveGuinea PigsEchocardiographyBioprosthesisHeart RatePulmonary ValveRheumatic Heart DiseaseVenous InsufficiencyRenal InsufficiencyEchocardiography, TransesophagealHeart Septal Defects, VentricularEchocardiography, Three-DimensionalExocrine Pancreatic InsufficiencyVentricular Function, LeftCardiac Valve AnnuloplastyHeart FailureHeart AtriaPlacental InsufficiencyHeart Defects, CongenitalPhonocardiographyEchocardiography, Doppler, ColorEndocarditis, BacterialHeart DiseasesEndocarditisVentricular Dysfunction, Left