Ventricular Function, LeftVentricular Function, RightVentricular FunctionStroke VolumeVentricular Dysfunction, LeftVentricular Dysfunction, RightHeart VentriclesEchocardiographyHeartMyocardial ContractionMyocardial InfarctionSystoleHemodynamicsRadionuclide VentriculographyRadionuclide AngiographyDiastoleEchocardiography, DopplerGated Blood-Pool ImagingElectrocardiographyMyocardiumHeart FailureHeart Function TestsCoronary CirculationCardiac CatheterizationCardiomyopathy, DilatedEchocardiography, Doppler, PulsedTime FactorsVentriculography, First-PassCoronary DiseaseCineangiographyHypertrophy, Right VentricularVentricular PressureCardiac VolumeHuman RightsHeart RateCardiomyopathiesTreatment OutcomeVentricular RemodelingFollow-Up StudiesCardiac OutputMyocardial IschemiaAngiocardiographyDobutamineVentricular DysfunctionProspective StudiesExercise TestBlood PressureCardiotonic AgentsCardiac Pacing, ArtificialMitral Valve InsufficiencyCoronary Artery BypassMagnetic Resonance Imaging, CineCoronary AngiographyTomography, Emission-Computed, Single-PhotonEchocardiography, Doppler, ColorGold RadioisotopesPhonocardiographyPredictive Value of TestsMyocardial ReperfusionPulmonary ArteryAtrial Function, RightMagnetic Resonance ImagingTetralogy of FallotDogsHeart DiseasesTricuspid ValveRecovery of FunctionAngioplasty, Balloon, CoronaryMitral ValveMyocardial Reperfusion InjuryAortic Valve StenosisAngina PectorisTechnetium Tc 99m SestamibiAdrenergic beta-AntagonistsHypertension, PulmonaryVentricular SeptumEchocardiography, StressCardiac Surgical ProceduresCoronary VesselsStreptokinaseHeart AtriaPrognosisCineradiographyPulmonary Valve InsufficiencyNatriuretic Peptide, BrainKinetocardiographyHeart Defects, CongenitalTransposition of Great VesselsArrhythmias, CardiacPacemaker, ArtificialMyocardial StunningHeart SeptumDisease Models, AnimalCardiomegalyHeart Valve Prosthesis ImplantationTissue SurvivalMetoprololObserver VariationExercise ToleranceMyocardial Revascularization