Atrial FibrillationHeart AtriaCatheter AblationVentricular FibrillationAnti-Arrhythmia AgentsPulmonary VeinsElectric CountershockHeartWarfarinAtrial FlutterAnticoagulantsElectrocardiographyHeart RateElectrophysiologic Techniques, CardiacAtrial AppendageAmiodaroneCardiac Pacing, ArtificialHeart Conduction SystemTreatment OutcomeThromboembolismStrokeAtrial FunctionRefractory Period, ElectrophysiologicalAtrial Function, LeftTachycardia, ParoxysmalHeart FailureFollow-Up StudiesRecurrenceElectrocardiography, AmbulatoryAtrial Premature ComplexesPropafenoneRisk FactorsHeart DiseasesBody Surface Potential MappingTime FactorsPacemaker, ArtificialProspective StudiesSotalolbeta-AlanineFlecainideAtrioventricular NodeSick Sinus SyndromeInternational Normalized RatioEmbolismEchocardiography, TransesophagealCryosurgeryWolff-Parkinson-White SyndromeArrhythmias, CardiacTachycardiaDogsChronic DiseaseBepridilEchocardiographyCardiac Surgical ProceduresDigoxinRisk AssessmentTachycardia, Ectopic AtrialHemorrhageIncidenceAtrial Function, RightArrhythmia, SinusHeart BlockRetrospective StudiesTachycardia, SupraventricularSinoatrial NodePredictive Value of TestsAtrial SeptumPostoperative ComplicationsDefibrillators, ImplantableHeart ValvesHeart Valve DiseasesBradycardiaMitral ValveAspirinAdrenergic beta-AntagonistsPericardiumModels, CardiovascularProcainamideHeart Defects, CongenitalRheumatic Heart DiseaseHeart TransplantationStroke VolumeFibrinolytic AgentsHeart ArrestTachycardia, VentricularAtrial RemodelingVentricular Dysfunction, LeftCerebrovascular DisordersAction PotentialsChi-Square DistributionBenzimidazolesMyocardiumComorbidityPrognosisCohort StudiesElectrophysiologyPyridonesDisopyramideAge FactorsProportional Hazards Models