Atrial FlutterAtrial FibrillationCatheter AblationAnti-Arrhythmia AgentsElectric CountershockElectrophysiologic Techniques, CardiacRecurrenceHeart AtriaElectrocardiographyFollow-Up StudiesPulmonary VeinsCardiac Pacing, ArtificialHeart Conduction SystemVentricular FibrillationPropafenoneAmiodaroneTricuspid ValveBody Surface Potential MappingAnticoagulantsAtrial AppendageAtrial FunctionWarfarinHeart BlockProcainamideRefractory Period, ElectrophysiologicalPericarditisTachycardia, ParoxysmalFlecainideTreatment OutcomeAtrial Premature ComplexesAtrial Function, LeftAtrial Function, RightTachycardia, SupraventricularTachycardiaElectrocardiography, AmbulatoryThromboembolismCryosurgeryDisopyramideTachycardia, Ectopic AtrialAtrioventricular NodeSotalolSick Sinus SyndromeProspective StudiesArrhythmias, CardiacEchocardiography, TransesophagealTime FactorsPacemaker, ArtificialStrokeVena Cava, InferiorDogsRisk FactorsHeart RateEchocardiographyElectrophysiologyDigoxinWolff-Parkinson-White SyndromeHeart DiseasesEmbolismCoronary SinusArrhythmia, SinusAtrial SeptumCardiac Surgical ProceduresRetrospective Studiesbeta-AlanineFluoroscopyPostoperative ComplicationsCardiac CathetersInternational Normalized RatioIncidenceChronic DiseaseVentricular Dysfunction, LeftVentricular Function, LeftSinoatrial NodeBundle of HisRisk AssessmentHydrops FetalisCardiac CatheterizationPredictive Value of TestsMitral ValveBepridilDefibrillators, ImplantableHeart FailureSurgery, Computer-AssistedEndocardiumTachycardia, VentricularHemorrhageTachycardia, Sinoatrial Nodal ReentryEquipment DesignHeart VentriclesChi-Square DistributionBradycardiaTachycardia, Atrioventricular Nodal ReentryPericardiumAction PotentialsAtrioventricular BlockSulfonamidesHeart Valve DiseasesButylscopolammonium BromideHeartElectrodes