Carcinoid Heart DiseaseEchocardiographyEchocardiography, TransesophagealEchocardiography, Three-DimensionalEchocardiography, DopplerEchocardiography, Doppler, ColorEchocardiography, StressMitral ValveHeart DiseasesHeart Septal Defects, AtrialHeart AtriaMitral Valve InsufficiencyEchocardiography, Doppler, PulsedCardiac CatheterizationSensitivity and SpecificityCardiac Surgical ProceduresDobutamineVentricular Function, LeftHeart VentriclesHeart Valve DiseasesHeart NeoplasmsAtrial AppendageMyocytes, CardiacPredictive Value of TestsHeartEsophagusCardiac OutputHeart Valve ProsthesisVentricular Dysfunction, LeftUltrasonographyUltrasonography, InterventionalProspective StudiesObserver VariationReproducibility of ResultsEmbolismStroke VolumeAortic ValveUltrasonicsIntraoperative CareFeasibility StudiesContrast MediaElectrocardiographyAortic DiseasesHeart Defects, CongenitalBlood Flow VelocityMyocardial ContractionThrombosisHemodynamicsMonitoring, IntraoperativeAtrial Function, LeftTime FactorsAortic Valve InsufficiencyTreatment OutcomeMitral Valve ProlapseUltrasonic TherapyTransducersHeart Valve Prosthesis ImplantationDiastoleHeart SeptumUltrasonography, PrenatalFetal HeartCardiac TamponadeMicrobubblesFollow-Up StudiesSystoleCoronary CirculationCardiotonic AgentsArrhythmias, CardiacChordae TendineaeForamen Ovale, PatentAtrial FibrillationIntraoperative PeriodMyxomaMyocardiumCardiomyopathiesCardiac VolumeAorta, ThoracicExercise TestCoronary AngiographyCardiac Pacing, ArtificialEndocarditisHeart AneurysmPulmonary VeinsHeart FailureMitral Valve StenosisMyocardial InfarctionAortic Valve StenosisTricuspid ValveTomography, X-Ray ComputedHigh-Intensity Focused Ultrasound AblationHeart Septal Defects, VentricularCoronary DiseaseMyocardial IschemiaEndocarditis, BacterialMagnetic Resonance ImagingTricuspid Valve InsufficiencyRetrospective StudiesElectric CountershockEvaluation Studies as TopicEquipment Design