EchocardiographyEchocardiography, TransesophagealEchocardiography, Three-DimensionalEchocardiography, DopplerEchocardiography, StressEchocardiography, Doppler, ColorVentricular Function, LeftVentricular Dysfunction, LeftEchocardiography, Doppler, PulsedDobutamineHeart VentriclesMitral ValveStroke VolumeHypertrophy, Left VentricularHeart AtriaHeart DiseasesMitral Valve InsufficiencyDiastoleSystoleMyocardial ContractionElectrocardiographyHeart Septal Defects, AtrialAtrial Function, LeftCardiac CatheterizationPredictive Value of TestsHeart Valve DiseasesObserver VariationHeart Defects, CongenitalExercise TestSensitivity and SpecificityHemodynamicsCardiotonic AgentsHeart NeoplasmsAortic ValveCoronary CirculationHeartProspective StudiesHeart SeptumFetal HeartBlood Flow VelocityContrast MediaFeasibility StudiesHeart FailureVentricular RemodelingEchocardiography, Four-DimensionalMyocardial InfarctionHeart Valve ProsthesisCardiac VolumeCardiomyopathiesAortic Valve StenosisTricuspid Valve InsufficiencyReproducibility of ResultsTricuspid ValveMyocardial IschemiaMitral Valve StenosisMyocardiumAortic Valve InsufficiencyVentricular Function, RightMitral Valve ProlapseCoronary AngiographyCardiomyopathy, DilatedVentricular Dysfunction, RightHeart AneurysmCardiomyopathy, HypertrophicCoronary DiseaseFollow-Up StudiesPericardial EffusionDipyridamoleHeart Valve Prosthesis ImplantationAtrial AppendageCardiac Surgical ProceduresTreatment OutcomeTime FactorsHeart Septal Defects, VentricularHeart MurmursEmbolismHeart Function TestsMyxomaPulmonary ArteryHypertension, PulmonaryVentricular FunctionFluorocarbonsBlood PressureTomography, Emission-Computed, Single-PhotonAtrial FibrillationSeverity of Illness IndexVentricular PressurePrognosisUltrasonography, PrenatalPulmonary VeinsMyocardial StunningThrombosisCardiac OutputNatriuretic Peptide, BrainHeart RatePhonocardiographyForamen Ovale, PatentEndocarditisVentricular DysfunctionCineangiography