Adrenergic AntagonistsAdrenergic alpha-AntagonistsPrazosinYohimbineAdrenergic beta-2 Receptor AntagonistsReceptors, Adrenergic, alphaAdrenergic alpha-AgonistsAdrenergic beta-AntagonistsAdrenergic alpha-1 Receptor AntagonistsClonidineIdazoxanPropanolaminesReceptors, AdrenergicAdrenergic alpha-2 Receptor AntagonistsButoxaminePropranololNorepinephrineAdrenergic AgonistsAdrenergic beta-1 Receptor AntagonistsTimololReceptors, Adrenergic, alpha-2MedetomidineDioxanesEpinephrinePhentolamineMyocytes, CardiacReceptors, Adrenergic, betaAdrenergic alpha-1 Receptor AgonistsReceptors, Adrenergic, alpha-1DoxazosinPhenylephrineIsoproterenolDose-Response Relationship, DrugAdrenergic beta-AgonistsRats, Sprague-DawleyAdrenergic alpha-2 Receptor AgonistsRats, WistarCardiac OutputHeartHeart RateBlood PressureImidazolesArrhythmias, CardiacCardiac Surgical ProceduresRats, Inbred StrainsDeath, Sudden, CardiacHormone AntagonistsDopamine AntagonistsExcitatory Amino Acid AntagonistsNeurokinin-1 Receptor AntagonistsNarcotic AntagonistsHistamine H2 AntagonistsInterleukin 1 Receptor Antagonist ProteinMyocardiumMuscarinic AntagonistsCardiomegalyCardiac Pacing, ArtificialCardiac TamponadeMyocardial ContractionHeart DiseasesPiperidinesTime FactorsGABA AntagonistsHistamine H1 AntagonistsPurinergic P1 Receptor AntagonistsCardiac CatheterizationHeart VentriclesHistamine AntagonistsNicotinic AntagonistsHeart ArrestAdenosine A2 Receptor AntagonistsPurinergic P2 Receptor AntagonistsCells, CulturedCalciumHemodynamicsAngiotensin Receptor AntagonistsSerotonin 5-HT3 Receptor AntagonistsSerotonin 5-HT2 Receptor AntagonistsCardiomyopathiesMyoblasts, CardiacElectrocardiographyHeart FailureDogsGuinea PigsDisease Models, AnimalAdenosine A1 Receptor AntagonistsCardiac MyosinsCardiac Imaging TechniquesLeukotriene AntagonistsCardiac GlycosidesEchocardiographyCardiac Output, LowMyocardial InfarctionSignal TransductionCalcium Channel BlockersGABA-A Receptor AntagonistsOut-of-Hospital Cardiac ArrestVentricular RemodelingVentricular Function, LeftCardiac Volume