EchocardiographyEchocardiography, Three-DimensionalEchocardiography, TransesophagealEchocardiography, DopplerEchocardiography, Doppler, ColorEchocardiography, StressMitral ValveHeart VentriclesMitral Valve InsufficiencyVentricular Dysfunction, LeftMitral Valve ProlapseStroke VolumeVentricular Function, LeftHeart AtriaHeart Septal Defects, AtrialObserver VariationPhonocardiographyEchocardiography, Doppler, PulsedAtrial Function, LeftHeart Valve DiseasesTricuspid Valve InsufficiencyTricuspid ValveHeart NeoplasmsDobutamineCardiac VolumeTricuspid Valve ProlapseSystoleHeart Defects, CongenitalReproducibility of ResultsChordae TendineaePredictive Value of TestsSensitivity and SpecificityElectrocardiographyFeasibility StudiesHypertrophy, Left VentricularHeart FailureProspective StudiesHeart DiseasesMagnetic Resonance ImagingDiastoleCardiac CatheterizationExercise TestMyocardial ContractionAortic ValveCardiotonic AgentsFetal HeartEchocardiography, Four-DimensionalSeverity of Illness IndexContrast MediaHeart SeptumHemodynamicsBlood Flow VelocityCoronary CirculationHeart Valve ProsthesisAortic Valve InsufficiencyHeartAortic Valve StenosisCardiomyopathiesMitral Valve StenosisMyocardial InfarctionDipyridamoleVentricular RemodelingMyocardial IschemiaVentricular Function, RightPericardial EffusionVentricular Dysfunction, RightCoronary AngiographyCoronary DiseaseHeart Valve Prosthesis ImplantationCardiomyopathy, HypertrophicHeart MurmursFollow-Up StudiesMyocardiumHeart Septal Defects, VentricularMyxomaCardiomyopathy, DilatedEmbolismHeart AneurysmCardiac Surgical ProceduresAtrial AppendageFluorocarbonsHypertension, PulmonaryHeart Function TestsUltrasonography, PrenatalEndocarditisTreatment OutcomePulmonary ArteryTime FactorsForamen Ovale, PatentTomography, Emission-Computed, Single-PhotonThrombosisMyocardial StunningPrognosisVentricular DysfunctionNatriuretic Peptide, BrainTissue SurvivalAtrial FibrillationEndocarditis, BacterialIntraoperative CarePulmonary Veins