EchocardiographyEchocardiography, TransesophagealHeartEchocardiography, Three-DimensionalEchocardiography, DopplerHeart DiseasesEchocardiography, StressEchocardiography, Doppler, ColorHeart Defects, CongenitalHeart RateCoronary DiseaseEchocardiography, Doppler, PulsedHeart FailureDobutamineVentricular Function, LeftMyocardial IschemiaVentricular Dysfunction, LeftRheumatic Heart DiseaseHeart AtriaFetal HeartStroke VolumeMitral ValveHeart VentriclesHeart Valve DiseasesProspective StudiesRisk FactorsMyocardial ContractionMitral Valve InsufficiencyPredictive Value of TestsHeart Septal Defects, AtrialMyocardial InfarctionElectrocardiographyExercise TestDiastoleCardiac CatheterizationMyocardiumSystoleFollow-Up StudiesHemodynamicsHeart ValvesCardiomyopathiesCardiotonic AgentsHeart NeoplasmsHeart TransplantationSensitivity and SpecificityObserver VariationHeart Valve ProsthesisHeart SeptumHypertrophy, Left VentricularTime FactorsHeart Function TestsAortic ValveCardiomyopathy, DilatedVentricular RemodelingBlood Flow VelocityEchocardiography, Four-DimensionalTricuspid Valve InsufficiencyFeasibility StudiesReproducibility of ResultsContrast MediaCarcinoid Heart DiseaseTricuspid ValveCoronary CirculationAortic Valve InsufficiencyCardiac Surgical ProceduresTreatment OutcomeHeart Septal Defects, VentricularAortic Valve StenosisMitral Valve StenosisCardiac VolumeRisk AssessmentHeart Valve Prosthesis ImplantationVentricular Function, RightVentricular Dysfunction, RightPrognosisHeart Septal DefectsMitral Valve ProlapseRetrospective StudiesHeart BlockPericardial EffusionAtrial Function, LeftCoronary AngiographyCardiomyopathy, HypertrophicHeart MurmursDipyridamoleCohort StudiesNatriuretic Peptide, BrainSeverity of Illness IndexHeart AneurysmCardiomegalyCyanosisAtrial FibrillationCardiovascular DiseasesPulmonary ArteryHypertension, PulmonaryUltrasonography, PrenatalVentricular DysfunctionEmbolismBlood PressureEndocarditis