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 CatheterizationSensitivity and SpecificityElectrocardiographyExercise TestHeart Defects, CongenitalHeart NeoplasmsMyocardial ContractionAortic ValveCardiotonic AgentsFetal HeartProspective StudiesEchocardiography, Four-DimensionalHypertrophy, Left VentricularContrast MediaFeasibility StudiesHemodynamicsHeart SeptumBlood Flow VelocityCoronary CirculationHeart Valve ProsthesisWorkTricuspid Valve InsufficiencyAortic Valve InsufficiencyHeartTricuspid ValveAortic Valve StenosisReproducibility of ResultsCardiomyopathiesMitral Valve ProlapseMitral Valve StenosisHeart FailureMyocardial InfarctionAtrial Function, LeftCardiac VolumeDipyridamoleVentricular RemodelingMyocardial IschemiaVentricular Function, RightPericardial EffusionVentricular Dysfunction, RightCoronary DiseaseCoronary AngiographyHeart Valve Prosthesis ImplantationFollow-Up StudiesCardiomyopathy, HypertrophicMyocardiumHeart MurmursHeart Septal Defects, VentricularCardiomyopathy, DilatedMyxomaEmbolismCardiac Surgical ProceduresHeart AneurysmAtrial AppendageTime FactorsFluorocarbonsHypertension, PulmonaryHeart Function TestsUltrasonography, PrenatalEndocarditisPulmonary ArteryTreatment OutcomeForamen Ovale, PatentSeverity of Illness IndexPrognosisTomography, Emission-Computed, Single-PhotonThrombosisMyocardial StunningVentricular DysfunctionPhonocardiographyNatriuretic Peptide, BrainChordae TendineaeAtrial FibrillationTissue SurvivalEndocarditis, BacterialIntraoperative CareImage Interpretation, Computer-AssistedCardiac Output