Stroke VolumeVentricular Function, LeftVentricular Dysfunction, LeftHeart FailureEchocardiographyGated Blood-Pool ImagingHeart VentriclesSystoleCardiomyopathy, DilatedRadionuclide AngiographyMyocardial InfarctionRadionuclide VentriculographyEchocardiography, DopplerVentricular RemodelingDiastoleHeartCardiac VolumeMyocardial ContractionMilk EjectionElectrocardiographyFollow-Up StudiesProspective StudiesHemodynamicsTreatment OutcomeVentricular Function, RightHeart Function TestsExercise TestPredictive Value of TestsVentriculography, First-PassNatriuretic Peptide, BrainTime FactorsMagnetic Resonance Imaging, CineCardiomyopathiesPrognosisHeart Failure, DiastolicMyocardiumCardiac Output, LowMitral Valve InsufficiencyEchocardiography, Three-DimensionalCardiac Pacing, ArtificialHeart Failure, SystolicCardiac OutputVentricular Dysfunction, RightCineangiographyExercise ToleranceTomography, Emission-Computed, Single-PhotonDefibrillators, ImplantableHeart DiseasesCardiac CatheterizationAdrenergic beta-AntagonistsAortic Valve StenosisSeverity of Illness IndexHeart RateRetrospective StudiesMyocardial IschemiaChronic DiseaseHypertrophy, Left VentricularDeath, Sudden, CardiacCardiotonic AgentsCoronary DiseaseCardiac Resynchronization TherapyVentricular FunctionTachycardia, VentricularRisk FactorsVentricular PressureCoronary Artery BypassReproducibility of ResultsObserver VariationAngiocardiographyDobutaminePropanolaminesMitral ValveBlood PressureCoronary AngiographyEchocardiography, Doppler, PulsedArrhythmias, CardiacVentricular DysfunctionSubcellular FractionsRisk AssessmentElectrocardiography, AmbulatoryBiological MarkersMultivariate AnalysisSurvival RateSurvival AnalysisAtrial Function, LeftTechnetium Tc 99m SestamibiPulmonary Wedge PressureCoronary CirculationEchocardiography, StressMagnetic Resonance ImagingHeart Valve Prosthesis ImplantationGallbladder EmptyingProportional Hazards ModelsSodium Pertechnetate Tc 99mEchocardiography, Doppler, ColorKaplan-Meier EstimateCarbazolesChi-Square DistributionAngioplasty, Balloon, CoronaryCoronary Artery Disease