Echocardiography, TransesophagealEchocardiographyEchocardiography, Three-DimensionalEchocardiography, DopplerEchocardiography, Doppler, ColorEchocardiography, StressHeart Septal Defects, AtrialMitral ValveContrast MediaHeart AtriaHeart DiseasesMitral Valve InsufficiencyAtrial AppendageDobutamineCoronary CirculationHeart NeoplasmsEchocardiography, Doppler, PulsedVentricular Function, LeftHeart Valve DiseasesHeart Valve ProsthesisEmbolismFluorocarbonsCardiac CatheterizationObserver VariationAortic ValveAortic DiseasesHeart VentriclesSensitivity and SpecificityVentricular Dysfunction, LeftPredictive Value of TestsThrombosisIntraoperative CareEsophagusForamen Ovale, PatentHeart SeptumStroke VolumeAtrial Function, LeftProspective StudiesMonitoring, IntraoperativeMitral Valve ProlapseCardiac Surgical ProceduresDiatrizoate MeglumineAortic Valve InsufficiencyFeasibility StudiesBlood Flow VelocityMyxomaHeart AneurysmHeart Valve Prosthesis ImplantationEndocarditisHeart Defects, CongenitalChordae TendineaeElectrocardiographyEmbolism, ParadoxicalHemodynamicsMyocardial ContractionSeptal Occluder DeviceAtrial FibrillationPulmonary VeinsReproducibility of ResultsThoraxAorta, ThoracicElectric CountershockMitral Valve StenosisSystoleIntraoperative PeriodMyocardial InfarctionDipyridamoleCoronary AngiographyEndocarditis, BacterialDiastoleAortic Valve StenosisTricuspid ValveSulfur HexafluorideHeart Septal Defects, VentricularTricuspid Valve InsufficiencyCoronary DiseaseCardiotonic AgentsTreatment OutcomeMyocardial IschemiaIntracranial EmbolismExercise TestMyocardial StunningDiatrizoateUltrasonography, InterventionalFollow-Up StudiesHeartAortic AneurysmAlbuminsCardiomyopathy, HypertrophicMicrobubblesThromboembolismHeart RupturePulmonary ArteryCoronary VesselsEmbolism, AirMyocardial ReperfusionEvaluation Studies as TopicTime FactorsValsalva ManeuverCor Triatriatum