Atrial FibrillationAtrial FlutterCatheter AblationHeart AtriaAnti-Arrhythmia AgentsElectric CountershockPulmonary VeinsElectrocardiographyVentricular FibrillationElectrophysiologic Techniques, CardiacCardiac Pacing, ArtificialHeart Conduction SystemAmiodaroneWarfarinAnticoagulantsAtrial AppendagePropafenoneAtrial FunctionBody Surface Potential MappingRefractory Period, ElectrophysiologicalTreatment OutcomeTachycardia, ParoxysmalAtrial Premature ComplexesFlecainideAtrial Function, LeftRecurrenceTricuspid ValveThromboembolismFollow-Up StudiesProcainamideElectrocardiography, AmbulatoryHeart BlockAtrial Function, RightStrokeTachycardia, SupraventricularPericarditisSotalolAtrioventricular NodeTachycardiaCryosurgerySick Sinus SyndromeProspective StudiesPacemaker, ArtificialTachycardia, Ectopic AtrialTime FactorsEchocardiography, TransesophagealArrhythmias, CardiacRisk FactorsDisopyramidebeta-AlanineHeart RateEmbolismWolff-Parkinson-White SyndromeDigoxinDogsInternational Normalized RatioArrhythmia, SinusCardiac Surgical ProceduresEchocardiographyAtrial SeptumElectrophysiologyRetrospective StudiesHeart DiseasesPostoperative ComplicationsIncidenceBepridilChronic DiseaseRisk AssessmentCoronary SinusSinoatrial NodeHemorrhageFluoroscopyPredictive Value of TestsVena Cava, InferiorCardiac CathetersDefibrillators, ImplantableMitral ValveHeart FailureBradycardiaHeart Valve DiseasesTachycardia, VentricularBundle of HisPericardiumAspirinChi-Square DistributionAction PotentialsCardiac CatheterizationSurgery, Computer-AssistedEndocardiumEquipment DesignFibrinolytic AgentsAtrial RemodelingCerebrovascular DisordersMultivariate AnalysisAtrioventricular BlockModels, CardiovascularPyridonesBenzimidazolesPrognosisAdministration, Oral