Atrial FibrillationCatheter AblationHeart AtriaVentricular FibrillationAnti-Arrhythmia AgentsPulmonary VeinsElectric CountershockWarfarinAtrial FlutterAnticoagulantsElectrocardiographyElectrophysiologic Techniques, CardiacAtrial AppendageAmiodaroneCardiac Pacing, ArtificialHeart Conduction SystemTreatment OutcomeThromboembolismStrokeRefractory Period, ElectrophysiologicalAtrial FunctionTachycardia, ParoxysmalAtrial Function, LeftRecurrenceAtrial Premature ComplexesFollow-Up StudiesPropafenoneElectrocardiography, AmbulatoryBody Surface Potential Mappingbeta-AlanineSotalolRisk FactorsFlecainidePacemaker, ArtificialTime FactorsProspective StudiesAtrioventricular NodeSick Sinus SyndromeInternational Normalized RatioEmbolismHeart RateEchocardiography, TransesophagealCryosurgeryWolff-Parkinson-White SyndromeArrhythmias, CardiacBepridilTachycardiaTachycardia, Ectopic AtrialDigoxinHemorrhageDogsChronic DiseaseCardiac Surgical ProceduresAtrial Function, RightRisk AssessmentArrhythmia, SinusTachycardia, SupraventricularIncidenceEchocardiographyRetrospective StudiesHeart FailureAtrial SeptumSinoatrial NodePredictive Value of TestsPostoperative ComplicationsInterleukin-1betaHeart Valve DiseasesBradycardiaHeart DiseasesDefibrillators, ImplantableMitral ValveAspirinPericardiumProcainamideAdrenergic beta-AntagonistsFibrinolytic AgentsElectrophysiologyCerebrovascular DisordersAtrial RemodelingPyridonesBenzimidazolesbeta 2-MicroglobulinHeart BlockTachycardia, VentricularDisopyramideChi-Square DistributionModels, CardiovascularAction PotentialsComorbidityMultivariate AnalysisAprindinePrognosisCohort StudiesMitral Valve StenosisCoronary Artery BypassAge FactorsAutonomic DenervationAdministration, OralVitamin KCardiac Complexes, Premature