EchocardiographyEchocardiography, TransesophagealEchocardiography, Three-DimensionalEchocardiography, DopplerEchocardiography, StressEchocardiography, Doppler, ColorEchocardiography, Doppler, PulsedDobutamineVentricular Function, LeftVentricular Dysfunction, LeftMitral ValveHeart VentriclesStroke VolumeMitral Valve InsufficiencyHeart DiseasesHeart AtriaHeart Septal Defects, AtrialHeart Valve DiseasesDiastoleObserver VariationPredictive Value of TestsSystoleCardiac CatheterizationElectrocardiographyHeart Defects, CongenitalHeart NeoplasmsSensitivity and SpecificityMyocardial ContractionExercise TestAortic ValveCardiotonic AgentsFetal HeartEchocardiography, Four-DimensionalProspective StudiesContrast MediaHypertrophy, Left VentricularFeasibility StudiesHemodynamicsHeart SeptumBlood Flow VelocityCoronary CirculationHeart Valve ProsthesisTricuspid Valve InsufficiencyAortic Valve InsufficiencyHeartTricuspid ValveAortic Valve StenosisReproducibility of ResultsMitral Valve ProlapseCardiomyopathiesMitral Valve StenosisHeart FailureMyocardial InfarctionAtrial Function, LeftDipyridamoleCardiac VolumeVentricular RemodelingMyocardial IschemiaVentricular Function, RightPericardial EffusionVentricular Dysfunction, RightCoronary DiseaseCoronary AngiographyHeart Valve Prosthesis ImplantationCardiomyopathy, HypertrophicFollow-Up StudiesMyocardiumHeart MurmursEmbolismHeart Septal Defects, VentricularCardiomyopathy, DilatedMyxomaCardiac Surgical ProceduresHeart AneurysmEndocarditisAtrial AppendageFluorocarbonsHypertension, PulmonaryTime FactorsTreatment OutcomeHeart Function TestsEndocarditis, BacterialUltrasonography, PrenatalPulmonary ArteryForamen Ovale, PatentPrognosisSeverity of Illness IndexThrombosisMyocardial StunningTomography, Emission-Computed, Single-PhotonVentricular DysfunctionPhonocardiographyNatriuretic Peptide, BrainChordae TendineaeAtrial FibrillationTissue SurvivalIntraoperative CareHeart ValvesPulmonary VeinsVentricular Function