Myocardial ContractionHemodynamicsVentricular Function, LeftStroke VolumeVentricular PressureVentricular Function, RightHeartSystoleVascular ResistanceCardiac OutputBlood PressureHeart VentriclesDogsVentricular Dysfunction, RightEchocardiographyVentricular FunctionDiastolePulmonary CirculationHeart RateCardiac VolumeModels, CardiovascularHeart FailureHypertension, PulmonaryVentricular Dysfunction, LeftPulmonary ArteryPulmonary Wedge PressureEchocardiography, DopplerDigitalisTransducers, PressureHeart Function TestsDihydralazineHypertrophy, Left VentricularAortic Valve StenosisCardiography, ImpedanceMyocardiumCardiomegalyAcidosis, RespiratoryHydralazineTorsion AbnormalityConstrictionCardiotonic AgentsDobutamineCompliancePressureConstriction, PathologicPulseNitroprussideCoronary CirculationBlood Flow VelocityCardiomyopathy, DilatedElasticityVascular StiffnessAortaThermodilutionNitroglycerinFerricyanidesVentricular SeptumCardiac CatheterizationBlood VolumeArteriesSwineCardiac Output, LowVena Cava, InferiorStress, MechanicalPerfusionPulsatile FlowIsofluraneVentricular RemodelingMilrinoneMitral Valve InsufficiencyAnalysis of VarianceVentricular DysfunctionVasodilator AgentsAortic Valve InsufficiencyCardiac Pacing, ArtificialLung ComplianceCaptoprilTime FactorsPositive-Pressure RespirationOxygen ConsumptionManometryFetal HeartMonitoring, PhysiologicBlood CirculationHypertensionPulmonary EmbolismNifedipineSarcoplasmic Reticulum Calcium-Transporting ATPasesHypertrophy, Right VentricularCatheterizationElectrocardiographyMyocardial IschemiaAdrenergic beta-AntagonistsChronic DiseaseCardiovascular SystemSheepCardiomyopathiesDisease Models, AnimalFluid TherapyAtrial Natriuretic Factor