Atrial FibrillationCatheter AblationHeart AtriaVentricular FibrillationAnti-Arrhythmia AgentsPulmonary VeinsElectric CountershockWarfarinAtrial FlutterAnticoagulantsElectrocardiographyElectrophysiologic Techniques, CardiacAtrial AppendageAmiodaroneCardiac Pacing, ArtificialHeart Conduction SystemTreatment OutcomeThromboembolismStrokeRefractory Period, ElectrophysiologicalTachycardia, ParoxysmalAtrial FunctionAtrial Function, LeftRecurrenceFollow-Up StudiesAtrial Premature ComplexesPropafenoneElectrocardiography, AmbulatoryRisk FactorsBody Surface Potential Mappingbeta-AlanineSotalolFlecainideProspective StudiesPacemaker, ArtificialTime FactorsAtrioventricular NodeSick Sinus SyndromeInternational Normalized RatioEmbolismEchocardiography, TransesophagealHeart RateCryosurgeryWolff-Parkinson-White SyndromeArrhythmias, CardiacBepridilBipolar DisorderChronic DiseaseTachycardiaTachycardia, Ectopic AtrialHemorrhageDigoxinRisk AssessmentCardiac Surgical ProceduresDogsIncidenceRetrospective StudiesAtrial Function, RightArrhythmia, SinusTachycardia, SupraventricularEchocardiographyPredictive Value of TestsAtrial SeptumHeart FailureMental DisordersSinoatrial NodePostoperative ComplicationsHeart Valve DiseasesHeart DiseasesComorbidityBradycardiaDefibrillators, ImplantableMitral ValveAnxiety DisordersMood DisordersAspirinPericardiumProcainamideCerebrovascular DisordersFibrinolytic AgentsAtrial RemodelingChi-Square DistributionElectrophysiologyPrevalencePyridonesBenzimidazolesAge FactorsCohort StudiesHeart BlockTachycardia, VentricularDisopyramideModels, CardiovascularMultivariate AnalysisAdrenergic beta-AntagonistsAction PotentialsPrognosisDiagnostic and Statistical Manual of Mental DisordersAprindineMitral Valve StenosisCoronary Artery Bypass