Receptors, Adrenergic, betaPhenylephrineReceptors, Adrenergic, alphaIsoproterenolNorepinephrineMyocytes, CardiacCardiac OutputHeartArrhythmias, CardiacCardiac Surgical ProceduresDeath, Sudden, CardiacCardiomegalyMyocardiumMyocardial ContractionCardiac Pacing, ArtificialCardiac TamponadeHeart DiseasesCardiac CatheterizationTime FactorsHeart VentriclesHeart ArrestHeart RateMethacholine ChlorideHeart FailureCardiomyopathiesCells, CulturedMyoblasts, CardiacHemodynamicsElectrocardiographyCardiac MyosinsCardiac Imaging TechniquesBlood PressureCardiac GlycosidesEchocardiographyCardiac Output, LowRats, Sprague-DawleyBronchial Provocation TestsOut-of-Hospital Cardiac ArrestMyocardial InfarctionTroponin IVentricular RemodelingVentricular Function, LeftHeart TransplantationCardiac VolumeSignal TransductionTreatment OutcomeBronchoconstrictor AgentsCalciumDose-Response Relationship, DrugStroke VolumeDogsMice, Inbred C57BLDisease Models, AnimalBronchial HyperreactivityHeart Defects, CongenitalRNA, MessengerCardiotonic AgentsProspective StudiesHeart Conduction SystemCardiac Resynchronization TherapyMice, TransgenicHeart Function TestsTroponin TCardiomyopathy, DilatedVentricular Dysfunction, LeftCardiopulmonary ResuscitationReproducibility of ResultsMice, KnockoutMyocardial IschemiaHeart NeoplasmsCardiac Care FacilitiesGene Expression RegulationRats, WistarAdrenergic beta-AgonistsModels, CardiovascularFibrosisAnimals, NewbornCardiac ElectrophysiologyHeart AtriaVentricular FunctionFetal HeartMolecular Sequence DataPredictive Value of TestsFollow-Up StudiesAnalysis of VarianceRabbitsHeart InjuriesMuscle ProteinsAtrial Natriuretic FactorBiological MarkersRisk FactorsCardiopulmonary BypassBase SequenceRetrospective StudiesHypertrophy, Left VentricularVascular ResistanceGuinea PigsAction PotentialsOrgan SizePromoter Regions, Genetic