Atrial Function, LeftAtrial FunctionAtrial Function, RightStroke VolumeHeart AtriaVentricular Function, LeftEchocardiography, DopplerVentricular Dysfunction, LeftAtrial FibrillationEchocardiographyMyocardial ContractionHeart FailureEchocardiography, Doppler, PulsedHeart Function TestsElectric CountershockPericardiectomyHemodynamicsHeart VentriclesGated Blood-Pool ImagingVentricular FunctionSystoleObserver VariationEchocardiography, TransesophagealHypertrophy, Left VentricularCardiomyopathy, DilatedMyocardial InfarctionVentricular RemodelingDiastoleRadionuclide VentriculographyHeartBlood Flow VelocityElectrocardiographyRadionuclide AngiographyCardiac VolumeTreatment OutcomeTime FactorsFollow-Up StudiesProspective StudiesVentricular Function, RightMyocardiumPredictive Value of TestsExercise TestCardiomyopathiesNatriuretic Peptide, BrainMilk EjectionMagnetic Resonance Imaging, CineVentriculography, First-PassPrognosisCardiac Pacing, ArtificialHeart Failure, DiastolicCardiac OutputCardiac Output, LowEchocardiography, Three-DimensionalCardiac CatheterizationHeart DiseasesImmunization, PassiveHeart RateCineangiographyTomography, Emission-Computed, Single-PhotonVentricular Dysfunction, RightHeart Failure, SystolicAortic Valve StenosisAdrenergic beta-AntagonistsVentricular PressureMitral Valve InsufficiencyMyocardial IschemiaExercise ToleranceBlood PressureSeverity of Illness IndexDefibrillators, ImplantableRetrospective StudiesCoronary DiseaseMitral ValveChronic DiseaseCardiotonic AgentsCoronary CirculationRisk FactorsReproducibility of ResultsCoronary AngiographyAngiocardiographyTachycardia, VentricularCoronary Artery BypassDobutamineArrhythmias, CardiacRisk AssessmentDeath, Sudden, CardiacPropanolaminesEchocardiography, Doppler, ColorBiological MarkersCardiac Resynchronization TherapyVentricular DysfunctionMultivariate AnalysisElectrocardiography, AmbulatoryPulmonary Wedge PressureSurvival RateSurvival AnalysisEchocardiography, StressHeart Valve Prosthesis ImplantationTechnetium Tc 99m SestamibiHeart Aneurysm