Atrial FibrillationAtrial FlutterAnticoagulantsCatheter AblationInternational Normalized RatioWarfarinHeart AtriaHemorrhageStrokeVitamin KAnti-Arrhythmia AgentsElectric CountershockElectrocardiographyFibrinolytic AgentsTreatment OutcomeElectrophysiologic Techniques, CardiacPulmonary VeinsRisk FactorsCardiac Pacing, ArtificialHeart Conduction SystemPlatelet Aggregation InhibitorsVentricular FibrillationPropafenoneAmiodaroneTricuspid ValveRisk AssessmentBody Surface Potential MappingAtrial AppendageAtrial FunctionProcainamideHeart BlockRefractory Period, ElectrophysiologicalPericarditisFlecainideTachycardia, ParoxysmalAtrial Premature ComplexesAtrial Function, RightTachycardia, SupraventricularAtrial Function, LeftRecurrenceFollow-Up StudiesTachycardiaElectrocardiography, AmbulatoryThromboembolismCryosurgeryDisopyramideTachycardia, Ectopic AtrialAtrioventricular NodeSotalolSick Sinus SyndromeArrhythmias, CardiacProspective StudiesEchocardiography, TransesophagealPacemaker, ArtificialTime FactorsVena Cava, InferiorElectrophysiologyDogsHeart RateDigoxinWolff-Parkinson-White SyndromeArrhythmia, SinusEmbolismCoronary SinusHeart DiseasesAtrial Septumbeta-AlanineEchocardiographyFluoroscopyCardiac Surgical ProceduresRetrospective StudiesPostoperative ComplicationsCardiac CathetersIncidenceChronic DiseaseSinoatrial NodeHydrops FetalisBundle of HisBepridilPredictive Value of TestsCardiac CatheterizationDefibrillators, ImplantableSurgery, Computer-AssistedMitral ValveTachycardia, Sinoatrial Nodal ReentryTachycardia, VentricularEquipment DesignEndocardiumTachycardia, Atrioventricular Nodal ReentryBradycardiaHeart FailureChi-Square DistributionAction PotentialsAtrioventricular BlockSulfonamidesButylscopolammonium BromidePericardiumHeart Valve DiseasesAspirinElectrodes