Ventricular Function, LeftVentricular Function, RightVentricular Dysfunction, LeftVentricular FunctionStroke VolumeHeart VentriclesEchocardiographyHeartMyocardial ContractionMyocardial InfarctionVentricular Dysfunction, RightSystoleHemodynamicsDiastoleRadionuclide VentriculographyHeart FailureMyocardiumGated Blood-Pool ImagingElectrocardiographyRadionuclide AngiographyEchocardiography, DopplerCoronary CirculationHeart Function TestsHypertrophy, Left VentricularCardiomyopathy, DilatedCardiac CatheterizationVentricular RemodelingCineangiographyTime FactorsCoronary DiseaseHeart RateCardiac VolumeVentriculography, First-PassVentricular PressureCardiac OutputCardiomyopathiesEchocardiography, Doppler, PulsedMyocardial IschemiaTreatment OutcomeDobutamineFollow-Up StudiesAngiocardiographyExercise TestBlood PressureAtrial Function, LeftProspective StudiesCardiotonic AgentsVentricular DysfunctionCoronary AngiographyMagnetic Resonance Imaging, CineCoronary Artery BypassEchocardiography, Doppler, ColorCardiac Pacing, ArtificialTomography, Emission-Computed, Single-PhotonMitral Valve InsufficiencyPredictive Value of TestsPhonocardiographyMyocardial ReperfusionDogsMitral ValveGold RadioisotopesHeart DiseasesCoronary VesselsAortic Valve StenosisTricuspid ValveMyocardial Reperfusion InjuryAngioplasty, Balloon, CoronaryTechnetium Tc 99m SestamibiAngina PectorisAdrenergic beta-AntagonistsEchocardiography, StressPulmonary ArteryNatriuretic Peptide, BrainPrognosisRecovery of FunctionKinetocardiographyTetralogy of FallotCardiac Surgical ProceduresCineradiographyHeart AtriaTransposition of Great VesselsMyocardial StunningHeart AneurysmVentricular SeptumStreptokinaseBlood Flow VelocityArrhythmias, CardiacDisease Models, AnimalMyocardial RevascularizationTissue SurvivalPacemaker, ArtificialHeart SeptumHeart Valve Prosthesis ImplantationObserver VariationMetoprololEndocardiumCardiac Output, LowExercise ToleranceHeart Valve ProsthesisMyocarditis