Heart FailureMyocardiumHeartGene ExpressionGene Expression RegulationChronic DiseaseCardiac Output, LowGene Transfer TechniquesGene Expression ProfilingHeart RateGenetic TherapyExercise ToleranceNatriuretic Peptide, BrainHeart Failure, SystolicStroke VolumeAdrenergic beta-AntagonistsGenetic VectorsRNA, MessengerHemodynamicsbeta-GalactosidaseAdenoviridaeVentricular Dysfunction, LeftExercise TestCardiomyopathy, DilatedVentricular Function, LeftPropanolaminesCarbazolesAngiotensin-Converting Enzyme InhibitorsOxygen ConsumptionHeart Failure, DiastolicVentricular RemodelingDiureticsPrognosisTreatment OutcomeHeart TransplantationCardiotonic AgentsEchocardiographyTime FactorsMetoprololProspective StudiesHeart Function TestsHeart DiseasesFollow-Up StudiesBiological MarkersOligonucleotide Array Sequence AnalysisCheyne-Stokes RespirationDouble-Blind MethodHospitalizationAtrial Natriuretic FactorSympathetic Nervous SystemPredictive Value of TestsDigoxinSeverity of Illness IndexPulmonary Wedge PressureCardiac Pacing, ArtificialTreatment FailureMyocardial InfarctionMyocardial ContractionMuscle, SkeletalDisease Models, AnimalExerciseHeart-Assist DevicesSystoleExercise TherapyCardio-Renal SyndromeMyocytes, CardiacNorepinephrineCardiac OutputBisoprololRisk FactorsBlood PressureVasodilator AgentsHeart VentriclesCardiomyopathiesSpironolactoneCardiomegalyGene Expression Regulation, DevelopmentalMineralocorticoid Receptor AntagonistsReverse Transcriptase Polymerase Chain ReactionHeart Defects, CongenitalEnalaprilDyspneaSteam BathMyocardial IschemiaCardiovascular AgentsForearmSurvival AnalysisSleep Apnea, CentralEchocardiography, DopplerSurvival RateVascular ResistanceCase-Control StudiesProportional Hazards ModelsDiastoleRetrospective StudiesTranscription, GeneticHeart AtriaAngiotensin II Type 1 Receptor BlockersRisk AssessmentVentricular Pressure