NorepinephrineHeartNorepinephrine Plasma Membrane Transport ProteinsHeart RateHeart FailureSympathetic Nervous SystemEpinephrineHeart DiseasesCatecholaminesHeart TransplantationHeart Defects, CongenitalAdrenergic Uptake InhibitorsDesipramineAdrenergic alpha-AgonistsFetal HeartMyocardiumHeart AtriaVasoconstrictor AgentsDopamine beta-HydroxylaseHemodynamicsReceptors, Adrenergic, alphaHeart ValvesAdrenergic alpha-AntagonistsDogsReceptors, AdrenergicRats, Sprague-DawleyReceptors, Adrenergic, betaPropranololBlood PressureDopamineReceptors, Adrenergic, alpha-2TyramineLocus CoeruleusDose-Response Relationship, DrugSympathomimeticsAdrenergic beta-AntagonistsMyocardial ContractionHeart BlockVasoconstrictionTime FactorsPhentolamineMethoxyhydroxyphenylglycolIsoproterenolAdrenergic AgentsMyocardial IschemiaVascular ResistancePerfusionPrazosinHeart Function TestsReceptors, Adrenergic, alpha-1YohimbineBiogenic MonoaminesAdrenergic FibersHeart Arrest, InducedNormetanephrineAdrenergic AntagonistsAdrenergic alpha-2 Receptor AntagonistsRats, WistarRats, Inbred StrainsNeurotransmitter Uptake InhibitorsClonidineMyocytes, CardiacSerotoninAdrenergic AgonistsElectric StimulationPhenylephrineVentricular Function, LeftReserpinePropylaminesNeurotransmitter AgentsAngiotensin IIAutonomic Nervous SystemCoronary DiseaseCardiomegalySympatholyticsOxygen Consumption3-IodobenzylguanidineAdrenergic beta-AgonistsCardiac Output, LowRabbitsCalciumPropanolaminesCardiomyopathy, DilatedHypertensionSymportersMicrodialysisStroke VolumeAdrenergic alpha-1 Receptor AgonistsRegional Blood FlowCardiotonic AgentsDisease Models, AnimalCardiomyopathiesRats, Inbred WKYReninDroxidopaAcetylcholineArteriesMyocardial InfarctionVasodilator AgentsAdrenergic Neurons