Echocardiography, TransesophagealAtrial FlutterEchocardiographyEchocardiography, Three-DimensionalEchocardiography, DopplerEchocardiography, Doppler, ColorHeart AtriaHeart Septal Defects, AtrialMitral ValveCatheter AblationAtrial AppendageAtrial FibrillationHeart DiseasesEchocardiography, StressMitral Valve InsufficiencyTricuspid ValveElectrocardiographyEmbolismHeart Valve ProsthesisElectric CountershockAortic DiseasesHeart Valve DiseasesCardiac CatheterizationHeart NeoplasmsIntraoperative CareEsophagusAtrial Function, LeftAortic ValveCardiac Surgical ProceduresEchocardiography, Doppler, PulsedThrombosisMonitoring, IntraoperativeDobutamineProspective StudiesMitral Valve ProlapsePulmonary VeinsForamen Ovale, PatentAortic Valve InsufficiencyVentricular Function, LeftSensitivity and SpecificityPredictive Value of TestsChordae TendineaeHeart VentriclesHeart Valve Prosthesis ImplantationObserver VariationEndocarditisCardiac Pacing, ArtificialIntraoperative PeriodAorta, ThoracicHeart SeptumHeart Defects, CongenitalTreatment OutcomeSeptal Occluder DeviceVentricular Dysfunction, LeftHeart AneurysmFeasibility StudiesStroke VolumeFollow-Up StudiesElectrophysiologic Techniques, CardiacMyxomaEmbolism, ParadoxicalPericarditisAtrial Function, RightHeart BlockMitral Valve StenosisEndocarditis, BacterialAnti-Arrhythmia AgentsThromboembolismPropafenoneTachycardia, SupraventricularAtrial SeptumIntracranial EmbolismBlood Flow VelocityThoraxHemodynamicsFluoroscopyHeart Septal Defects, VentricularVena Cava, InferiorAortic AneurysmProcainamideReproducibility of ResultsAortic Valve StenosisHeart Conduction SystemHeart RuptureTime FactorsBenzocaineTricuspid Valve InsufficiencyContrast MediaDiastoleBody Surface Potential MappingRetrospective StudiesUltrasonography, InterventionalEmbolism, AirAneurysm, DissectingEvaluation Studies as TopicMyocardial ContractionSystoleHeartAtrial FunctionPostoperative Complications