Atrial FibrillationProton-Translocating ATPasesHeart AtriaCatheter AblationAnti-Arrhythmia AgentsVentricular FibrillationHeart FailurePulmonary VeinsHeartElectric CountershockWarfarinElectrocardiographyAnticoagulantsAtrial FlutterHeart RateCardiac Pacing, ArtificialElectrophysiologic Techniques, CardiacAmiodaroneAtrial AppendageCattleHeart Conduction SystemTreatment OutcomeFollow-Up StudiesThromboembolismStrokeAtrial FunctionRefractory Period, ElectrophysiologicalAtrial Function, LeftRisk FactorsTachycardia, ParoxysmalHeart DiseasesTime FactorsElectrocardiography, AmbulatoryRecurrenceProspective StudiesAtrial Premature ComplexesPacemaker, ArtificialPropafenoneBody Surface Potential MappingSotalolbeta-AlanineAtrioventricular NodeFlecainideEchocardiographySick Sinus SyndromeDogsChronic DiseaseDigoxinEchocardiography, TransesophagealArrhythmias, CardiacInternational Normalized RatioEmbolismRetrospective StudiesTachycardiaRisk AssessmentCryosurgeryCardiac Surgical ProceduresWolff-Parkinson-White SyndromeIncidencePredictive Value of TestsAtrial Function, RightVentricular Dysfunction, LeftStroke VolumeTachycardia, Ectopic AtrialHemodynamicsBepridilHeart BlockHemorrhageAdrenergic beta-AntagonistsVentricular Function, LeftPostoperative ComplicationsArrhythmia, SinusMyocardiumSinoatrial NodeDefibrillators, ImplantableTachycardia, SupraventricularHeart Valve DiseasesMitral ValvePrognosisMyocardial InfarctionHeart ValvesAtrial SeptumBradycardiaNatriuretic Peptide, BrainCardiomyopathy, DilatedAspirinRheumatic Heart DiseaseComorbidityPericardiumCohort StudiesHeart TransplantationModels, CardiovascularHeart Defects, CongenitalHeart VentriclesTachycardia, VentricularMyocardial ContractionProportional Hazards ModelsMultivariate AnalysisChi-Square DistributionAge Factors