Atrial Function, LeftAtrial FunctionHeart AtriaAtrial Function, RightCardiac VolumeEchocardiography, DopplerAtrial FibrillationVentricular Function, LeftEchocardiographyStroke VolumeEchocardiography, Three-DimensionalDiastoleSinus Arrest, CardiacVentricular Dysfunction, LeftObserver VariationEchocardiography, Doppler, PulsedPericardiectomyElectric CountershockMitral Valve InsufficiencyMyocardial ContractionHemodynamicsReproducibility of ResultsPredictive Value of TestsHeart Function TestsHeart VentriclesMitral ValveSystoleVentricular PressureHeart FailureProspective StudiesNatriuretic Peptide, BrainOrgan SizeEchocardiography, TransesophagealVentricular RemodelingROC CurveElectrocardiographyVentricular FunctionHypertrophy, Left VentricularRisk AssessmentBlood Flow VelocityTime FactorsBlood VolumeCardiomegalyPrognosisSensitivity and SpecificityFollow-Up StudiesReference ValuesMagnetic Resonance ImagingBody Surface AreaRisk FactorsRetrospective StudiesMultivariate AnalysisBiological MarkersCohort StudiesMagnetic Resonance Imaging, CineTreatment OutcomePulmonary VeinsLinear Models