Echocardiography, TransesophagealEchocardiographyEchocardiography, Three-DimensionalEchocardiography, DopplerEchocardiography, Doppler, ColorEchocardiography, StressMyocardial ContractionMitral ValveHeart DiseasesHeart Septal Defects, AtrialHeart AtriaVentricular Function, LeftDobutamineEchocardiography, Doppler, PulsedHeart VentriclesMitral Valve InsufficiencyHeartMyocytes, CardiacCardiac CatheterizationCardiac Surgical ProceduresCardiac OutputVentricular Dysfunction, LeftAtrial AppendageHeart NeoplasmsHeart Valve DiseasesStroke VolumeHeart Valve ProsthesisEsophagusEmbolismAortic ValveHemodynamicsElectrocardiographyMyocardiumIntraoperative CareAortic DiseasesPredictive Value of TestsObserver VariationCardiotonic AgentsAtrial Function, LeftHeart Defects, CongenitalSensitivity and SpecificityProspective StudiesAortic Valve InsufficiencyThrombosisSystoleMitral Valve ProlapseMonitoring, IntraoperativeDiastoleHeart Valve Prosthesis ImplantationFeasibility StudiesCoronary CirculationBlood Flow VelocityHeart SeptumCardiac VolumeHeart FailureCardiomyopathiesCardiac Pacing, ArtificialArrhythmias, CardiacCardiac TamponadeAorta, ThoracicChordae TendineaeAtrial FibrillationForamen Ovale, PatentMyxomaTime FactorsFetal HeartExercise TestEndocarditisHeart AneurysmMyocardial InfarctionIntraoperative PeriodMitral Valve StenosisAortic Valve StenosisMyocardial IschemiaReproducibility of ResultsPulmonary VeinsTricuspid ValveContrast MediaHeart RateTreatment OutcomeHeart Septal Defects, VentricularCardiomegalyEndocarditis, BacterialVentricular RemodelingElectric CountershockFollow-Up StudiesHeart Function TestsTricuspid Valve InsufficiencySeptal Occluder DeviceVentricular Function, RightCoronary AngiographyHypertrophy, Left VentricularCoronary DiseaseVentricular FunctionEmbolism, ParadoxicalBlood PressureDogsDeath, Sudden, CardiacPericardial EffusionDipyridamole