Heart Failure, SystolicHeart FailureHeartHeart Failure, DiastolicCardiac Output, LowStroke VolumeNatriuretic Peptide, BrainVentricular Dysfunction, LeftHeart RateSystoleAdrenergic beta-AntagonistsChronic DiseaseVentricular Function, LeftEchocardiography, DopplerHospitalizationDiastoleHeart TransplantationTreatment OutcomeVentricular RemodelingEchocardiographyFollow-Up StudiesProspective StudiesHemodynamicsPrognosisPropanolaminesExercise TestMineralocorticoid Receptor AntagonistsAngiotensin-Converting Enzyme InhibitorsBiological MarkersSpironolactoneSeverity of Illness IndexCardiac Pacing, ArtificialDiureticsDigoxinMyocardial ContractionCardiovascular AgentsMyocardiumHeart DiseasesPhosphodiesterase 5 InhibitorsTime FactorsPredictive Value of TestsCardiomyopathy, DilatedRisk FactorsProportional Hazards ModelsExercise ToleranceKaplan-Meier EstimatePulmonary Wedge PressureTreatment FailureHeart VentriclesCardiac Resynchronization TherapyRisk AssessmentOutpatientsElectrocardiographyOxygen ConsumptionRetrospective StudiesHeart Defects, CongenitalCardiotonic AgentsVentricular Function, RightSurvival RateSurvival AnalysisDouble-Blind MethodHeart Function TestsCardiomyopathiesCardiomegalyMyocardial InfarctionMyocytes, CardiacDisease ProgressionDefibrillators, ImplantablePeptide FragmentsCohort StudiesHeart AtriaHeart-Assist DevicesBlood PressureFetal HeartMyocardial IschemiaCase-Control StudiesDisease Models, AnimalChi-Square DistributionUnited StatesGlomerular Filtration RateHeart ValvesAge FactorsDogsKidney Failure, ChronicMultivariate AnalysisAtrial Natriuretic FactorVentricular DysfunctionCarbazolesSympathetic Nervous SystemPatient ReadmissionHeart BlockVentricular Pressure