Proton-Translocating ATPasesHeartHeart FailureHeart RateCattleHeart DiseasesHeart TransplantationHeart Defects, CongenitalFetal HeartHeart AtriaHeart ValvesMyocardiumHemodynamicsCardiomyopathy, DilatedVentricular Function, LeftHeart Function TestsHeart BlockMyocardial ContractionVentricular Dysfunction, LeftStroke VolumeTime FactorsMyocardial InfarctionMyocardial IschemiaNatriuretic Peptide, BrainEchocardiographyRats, Inbred F344Cardiotonic AgentsRisk FactorsHeart Arrest, InducedMyocytes, CardiacFollow-Up StudiesCardiac Pacing, ArtificialAdrenergic beta-AntagonistsCardiomyopathiesTreatment OutcomeCoronary DiseaseCardiomegalyProspective StudiesDogsDiureticsChronic DiseaseVentricular RemodelingCardiac Output, LowRheumatic Heart DiseaseSympathetic Nervous SystemExercise TestPrognosisF FactorHeart Valve ProsthesisHeart Failure, SystolicNorepinephrineRetrospective StudiesF2-IsoprostanesPropanolaminesAtrial FibrillationOxygen ConsumptionPerfusionCheyne-Stokes RespirationDigoxinDiastoleDisease Models, AnimalPredictive Value of TestsAtrial Natriuretic FactorPulmonary Wedge PressureHeart, ArtificialSystoleBiological MarkersHospitalizationHeart Failure, DiastolicAnti-Arrhythmia AgentsAngiotensin-Converting Enzyme InhibitorsSeverity of Illness IndexVentricular PressureMyocarditisHeart InjuriesHeart Rate, FetalHeart SeptumRisk AssessmentRats, Sprague-DawleyAutonomic Nervous SystemMyocardial Reperfusion InjuryRats, WistarCohort StudiesHeart ArrestHypertrophy, Left VentricularCardiovascular DiseasesDouble-Blind MethodVentricular DysfunctionSpironolactoneSurvival AnalysisEchocardiography, DopplerElectrocardiography, AmbulatoryProportional Hazards ModelsFurosemideHeart-Assist DevicesCardiac CatheterizationCarbazolesCaptoprilAmerican Heart AssociationMetoprolol