Atrial FibrillationHeart AtriaCatheter AblationVentricular FibrillationAnti-Arrhythmia AgentsPulmonary VeinsElectric CountershockHeartWarfarinAtrial FlutterAnticoagulantsElectrocardiographyHeart RateElectrophysiologic Techniques, CardiacAtrial AppendageAmiodaroneCardiac Pacing, ArtificialHeart Conduction SystemTreatment OutcomeThromboembolismAtrial FunctionStrokeRefractory Period, ElectrophysiologicalAtrial Function, LeftTachycardia, ParoxysmalHeart FailureFollow-Up StudiesRecurrenceElectrocardiography, AmbulatoryAtrial Premature ComplexesPropafenoneRisk FactorsTime FactorsHeart DiseasesAnterior ChamberPacemaker, ArtificialBody Surface Potential MappingProspective StudiesSotalolbeta-AlanineFlecainideAtrioventricular NodeSick Sinus SyndromeInternational Normalized RatioEmbolismEchocardiography, TransesophagealCryosurgeryWolff-Parkinson-White SyndromeDogsArrhythmias, CardiacEchocardiographyTachycardiaChronic DiseaseBepridilCardiac Surgical ProceduresDigoxinRisk AssessmentTachycardia, Ectopic AtrialHeart BlockHemorrhageAtrial Function, RightArrhythmia, SinusIncidenceRetrospective StudiesTachycardia, SupraventricularSinoatrial NodePredictive Value of TestsAtrial SeptumPostoperative ComplicationsDefibrillators, ImplantableHeart ValvesHeart Valve DiseasesBradycardiaMitral ValveAspirinAdrenergic beta-AntagonistsModels, CardiovascularPericardiumHeart Defects, CongenitalProcainamideStroke VolumeRheumatic Heart DiseaseHeart TransplantationMyocardiumFibrinolytic AgentsVentricular Dysfunction, LeftTachycardia, VentricularHeart ArrestAction PotentialsElectrophysiologyAtrial RemodelingChi-Square DistributionCerebrovascular DisordersBenzimidazolesPrognosisComorbidityCohort StudiesPyridonesDisopyramideAge Factors