Heart FailureHeartHeart RateCardiac Output, LowTreatment FailureHeart Failure, SystolicHeart Failure, DiastolicStroke VolumeMyocardiumCardiomyopathy, DilatedNatriuretic Peptide, BrainHeart DiseasesVentricular Function, LeftHeart TransplantationHemodynamicsChronic DiseaseTreatment OutcomeVentricular Dysfunction, LeftAdrenergic beta-AntagonistsVentricular RemodelingTime FactorsEchocardiographyKidney Failure, ChronicCardiotonic AgentsMyocardial ContractionFollow-Up StudiesHeart Defects, CongenitalCardiac Pacing, ArtificialProspective StudiesFailure to ThrivePrognosisCardiomyopathiesHeart Function TestsCardiomegalyRisk FactorsDiureticsMyocardial InfarctionAngiotensin-Converting Enzyme InhibitorsHeart-Assist DevicesLiver Failure, AcuteHospitalizationRetrospective StudiesMyocytes, CardiacHeart AtriaPropanolaminesExercise TestDisease Models, AnimalBiological MarkersMyocardial IschemiaSeverity of Illness IndexSystoleHeart VentriclesPredictive Value of TestsFetal HeartDogsDiastoleExercise ToleranceDigoxinLiver FailureAtrial Natriuretic FactorVentricular DysfunctionHeart ValvesMultiple Organ FailureCarbazolesRisk AssessmentSympathetic Nervous SystemPatient ReadmissionOxygen ConsumptionProportional Hazards ModelsSurvival AnalysisEchocardiography, DopplerVentricular PressureCardiovascular AgentsEquipment FailureDouble-Blind MethodSurvival RateCohort StudiesPulmonary Wedge PressureBlood PressureMineralocorticoid Receptor AntagonistsHeart BlockAcute DiseaseAcute Kidney InjurySpironolactoneMetoprololPacemaker, ArtificialRenal InsufficiencyElectrocardiographyCardiac Resynchronization TherapyDisease ProgressionRespiratory InsufficiencyNorepinephrineKaplan-Meier EstimateCoronary DiseaseFibrosisVasodilator AgentsArrhythmias, CardiacAtrial FibrillationKidneyDeath, Sudden, Cardiac