Myocardial ContractionHeartMyocardiumPapillary MusclesVentricular Function, LeftDogsThiamylalHemodynamicsDepression, ChemicalCardiotonic AgentsHeart VentriclesCardiac OutputHeart RateIsoproterenolHydrazonesDobutamineAdrenergic beta-AgonistsReceptors, Adrenergic, betaAmrinoneVentricular FunctionVentricular PressureHalothaneEchocardiographyBlood PressureCoronary CirculationCalciumStroke VolumeMyocytes, CardiacPyridazinesIsofluraneSystoleVentricular Dysfunction, LeftAnestheticsInterleukin-1betaHeart FailurePropranololSarcoplasmic Reticulum Calcium-Transporting ATPasesHeart Function TestsVascular ResistanceCardiomyopathiesMethyl EthersCardiac VolumeAutonomic Nerve BlockDose-Response Relationship, DrugAdrenergic beta-AntagonistsStimulation, ChemicalPenbutololPerfusionSarcoplasmic ReticulumTime FactorsCardiomegalyEnfluraneEthersMuscle Contractionbeta 2-MicroglobulinCardiomyopathy, DilatedUterine ContractionDiastoleMyocardial IschemiaRats, Sprague-DawleyNitric Oxide SynthaseRats, WistarNitric OxideCalcium-Binding ProteinsPropofolCells, CulturedNorepinephrineCardiovascular SystemNitric Oxide Synthase Type IModels, CardiovascularHypotensionAnesthesia, InhalationRabbitsCardiac CatheterizationCardiac Pacing, ArtificialEnzyme InhibitorsSwineDisease Models, AnimalCalcium-Transporting ATPasesIntegrin beta3Cell SizeElectric StimulationAnesthetics, InhalationStress, MechanicalAnesthetics, IntravenousMyocardial Reperfusion InjuryMice, Inbred C57BLVerapamilOxygen ConsumptionElectrocardiographyCatecholaminesCoronary VesselsMice, KnockoutAutonomic Nervous SystemNifedipineVasodilator AgentsMyocardial InfarctionMice, TransgenicEchocardiography, DopplerModels, Animal