EchinaceaHeartAraliaceaeOpiumFormularies, HomeopathicMelissaHomeopathyPhytolaccaHeart RateSaponariaScutellariaPharmacopoeias, HomeopathicPhellodendronKrameriaceaeGinkgo bilobaDepsidesPlant ExtractsPlant Components, AerialPlant PreparationsHerbal MedicineHeart FailureUrtica dioicaPanaxPlants, MedicinalHeart DiseasesHeart TransplantationHeart Defects, CongenitalDrug StorageAnti-Infective Agents, LocalCinnamatesChromatography, High Pressure LiquidFetal HeartHeart ValvesHeart AtriaPlant RootsPhenolsIndicators and ReagentsPhytotherapyHeart BlockMyocardiumFree Radical ScavengersHeart Arrest, InducedHeart Function TestsMyocardial ContractionMyocardial IschemiaData Interpretation, StatisticalMyocytes, CardiacCoronary DiseaseHemodynamicsCardiac Output, LowVentricular Function, LeftTime FactorsHeart, ArtificialHeart Failure, SystolicPerfusionCardiomyopathy, DilatedCardiomegalyMyocardial InfarctionHeart InjuriesHeart Rate, FetalHeart SeptumCardiotonic AgentsRheumatic Heart DiseaseStroke VolumeCardiomyopathiesEchocardiographyMyocardial Reperfusion InjuryHeart ArrestRisk FactorsHeart Valve ProsthesisVentricular Dysfunction, LeftAdrenergic beta-AntagonistsHeart Failure, DiastolicAmerican Heart AssociationVentricular RemodelingDogsProspective StudiesOxygen ConsumptionFollow-Up StudiesAutonomic Nervous SystemCardiac Pacing, ArtificialHeart Septal DefectsHypoplastic Left Heart SyndromeHeart NeoplasmsRats, Sprague-DawleyChronic DiseaseNational Heart, Lung, and Blood Institute (U.S.)Natriuretic Peptide, BrainDisease Models, AnimalRats, WistarVentricular PressureTreatment OutcomeExercise TestSympathetic Nervous SystemModels, CardiovascularSystoleEndocardiumDiastoleIsoproterenolPropanolamines