Ventricular Function, RightVentricular Dysfunction, RightSystoleTricuspid ValveEchocardiographyVentricular Function, LeftVentricular Dysfunction, LeftEchocardiography, DopplerStroke VolumeDiastoleEchocardiography, TransesophagealHeart VentriclesEchocardiography, Three-DimensionalHeart FailureEchocardiography, Doppler, ColorMyocardial ContractionEchocardiography, Doppler, PulsedEchocardiography, StressHemodynamicsElectrocardiographyHeartRadionuclide VentriculographyMitral ValveDobutamineVentricular FunctionMyocardial InfarctionCardiomyopathy, DilatedCardiomyopathiesMyocardiumMitral Valve InsufficiencyCardiac CatheterizationVentricular RemodelingExercise TestProspective StudiesHypertrophy, Left VentricularHeart Failure, DiastolicPredictive Value of TestsCardiotonic AgentsCardiac Output, LowVentricular PressureHeart DiseasesNatriuretic Peptide, BrainTime FactorsObserver VariationCoronary CirculationHeart RateFollow-Up StudiesMyocardial IschemiaHeart AtriaBlood PressurePrognosisCardiac Pacing, ArtificialBlood Flow VelocityHeart Function TestsTreatment OutcomeReproducibility of ResultsSensitivity and SpecificityCardiac VolumeHypertension, PulmonaryHeart Failure, SystolicRadionuclide AngiographyCoronary AngiographyGated Blood-Pool ImagingCoronary DiseaseAortic Valve StenosisHeart SeptumVentricular DysfunctionAdrenergic beta-AntagonistsAtrial FibrillationAtrial Function, LeftSeverity of Illness IndexRisk FactorsRetrospective StudiesMagnetic Resonance Imaging, CineCardiac OutputAortic ValveCardiomyopathy, HypertrophicHeart Defects, CongenitalChronic DiseaseHypertensionHeart Septal Defects, AtrialDisease Models, AnimalHeart Valve ProsthesisROC CurveCase-Control StudiesHeart Valve DiseasesContrast MediaCardiomegalyAortic Valve InsufficiencyCardiac Surgical ProceduresAngiotensin-Converting Enzyme InhibitorsAtrial Function, RightTricuspid Valve InsufficiencyFeasibility StudiesTomography, Emission-Computed, Single-PhotonRisk AssessmentHeart Valve Prosthesis ImplantationCoronary Artery DiseaseMagnetic Resonance ImagingPulmonary Artery