EchocardiographyEchocardiography, DopplerEchocardiography, Three-DimensionalMitral ValveHeart VentriclesVentricular Dysfunction, LeftVentricular Function, LeftEchocardiography, Doppler, ColorStroke VolumeEchocardiography, TransesophagealAortic Valve InsufficiencyMitral Valve InsufficiencyDiastoleMitral Valve StenosisMitral Valve ProlapseAtrial Function, RightObserver VariationHeart Septal DefectsSystoleAortic ValveTricuspid Valve InsufficiencyEchocardiography, Doppler, PulsedHeart AtriaReproducibility of ResultsHypertrophy, Left VentricularHeart Valve DiseasesHeart Valve ProsthesisPredictive Value of TestsAortic Valve StenosisVentricular Function, RightVentricular RemodelingHeart DiseasesProspective StudiesHeart Defects, CongenitalHeart SeptumHeart Septal Defects, AtrialAortic Stenosis, SubvalvularCardiac CatheterizationMyocardial ContractionCardiomyopathy, HypertrophicPulmonary Valve InsufficiencyBlood Flow VelocityHemodynamicsHeart FailureTreatment OutcomeSensitivity and SpecificityElectrocardiographyVentricular Outflow ObstructionFollow-Up StudiesHypertension, PulmonaryHeartPulmonary ArteryHeart Valve Prosthesis ImplantationVentricular FunctionSeverity of Illness IndexTime FactorsInfant, NewbornFeasibility StudiesMyocardial InfarctionRetrospective StudiesPrognosisHeart RateRisk AssessmentReference ValuesBlood PressureTricuspid ValveRisk FactorsAtrial Function, LeftHeart Septal Defects, VentricularCardiomyopathiesCardiac VolumeVentricular Dysfunction, RightCase-Control StudiesRheumatic Heart DiseaseCardiomyopathy, DilatedPericardial EffusionHeart NeoplasmsFetal HeartNatriuretic Peptide, BrainMyxomaHeart ValvesCardiac Pacing, ArtificialCardiac Resynchronization TherapyPulmonary ValveExercise TestEchocardiography, StressDobutamineAtrial FibrillationEbstein AnomalyCatheterizationAortic CoarctationVentricular SeptumBody Surface AreaChordae TendineaePulmonary Wedge PressureCardiac Surgical ProceduresMyocardiumROC CurveAngiocardiographyVentricular Dysfunction