Ventricular Dysfunction, LeftVentricular DysfunctionVentricular Dysfunction, RightVentricular Function, LeftEchocardiographyStroke VolumeHeart FailureCardiomyopathiesHemodynamicsHeart VentriclesNatriuretic Peptide, BrainMyocardial ContractionMyocardial InfarctionMyocardiumElectrocardiographyRadionuclide VentriculographyHeartVentricular RemodelingHypertrophy, Left VentricularSystoleCardiomyopathy, DilatedMyocardial StunningDiastoleMyocardial IschemiaDobutamineErectile DysfunctionTreatment OutcomeCardiotonic AgentsTime FactorsFollow-Up StudiesEchocardiography, DopplerProspective StudiesTakotsubo CardiomyopathyPredictive Value of TestsAngiotensin-Converting Enzyme InhibitorsPrognosisProton Pump InhibitorsMitral Valve InsufficiencyVentricular Function, RightCoronary CirculationEnalaprilCoronary DiseaseCoronary Artery BypassHeart DiseasesCardiac Output, LowExercise TestBiological MarkersDisease Models, AnimalThallium RadioisotopesVentricular PressureTomography, Emission-Computed, Single-PhotonSeverity of Illness IndexPulmonary EmbolismDogsBlood PressureTransposition of Great VesselsChronic DiseaseRisk FactorsArrhythmias, CardiacRetrospective StudiesHeart RateMyocardial RevascularizationCardiac Pacing, ArtificialAtrial Function, LeftTissue SurvivalHeart AtriaHeart Function TestsCardiac CatheterizationAtrial Natriuretic FactorDefibrillators, ImplantableInfusion PumpsCardiac VolumeIon PumpsAortic Valve StenosisTachycardia, VentricularIntra-Aortic Balloon PumpingAdrenergic beta-AntagonistsVasodilator AgentsCoronary AngiographyCardiac OutputPulmonary Wedge PressureMitral ValveMyocytes, CardiacHeart-Assist DevicesAortic ValveSensitivity and SpecificityRisk AssessmentFibrosisHypertension, PulmonaryPreexisting Condition CoverageVentricular FunctionGated Blood-Pool ImagingCardiopulmonary BypassCoronary Artery DiseaseAnti-Arrhythmia AgentsCardiomegalyAtrial PressureAnalysis of VarianceEndocardial FibroelastosisCoronary Vessels