Atrial FlutterAtrial FibrillationCatheter AblationHeart AtriaAnti-Arrhythmia AgentsElectric CountershockElectrocardiographyElectrophysiologic Techniques, CardiacPulmonary VeinsCardiac Pacing, ArtificialVentricular FibrillationHeart Conduction SystemPropafenoneAmiodaroneHeartTricuspid ValveAnticoagulantsHeart BlockBody Surface Potential MappingIncidenceHeart RateWarfarinAtrial FunctionAtrial AppendageRefractory Period, ElectrophysiologicalProcainamideTreatment OutcomePericarditisTachycardia, ParoxysmalFlecainideAtrial Premature ComplexesAtrial Function, RightFollow-Up StudiesTachycardia, SupraventricularRecurrenceAtrial Function, LeftTachycardiaElectrocardiography, AmbulatoryProspective StudiesThromboembolismAtrioventricular NodeCryosurgeryDisopyramideTime FactorsTachycardia, Ectopic AtrialHeart DiseasesRisk FactorsSotalolSick Sinus SyndromeArrhythmias, CardiacPacemaker, ArtificialEchocardiography, TransesophagealStrokeHeart FailureDogsVena Cava, InferiorRetrospective StudiesDigoxinElectrophysiologyEchocardiographyWolff-Parkinson-White SyndromePostoperative ComplicationsArrhythmia, SinusEmbolismCardiac Surgical ProceduresCoronary SinusAtrial Septumbeta-AlanineFluoroscopyCardiac CathetersChronic DiseaseRisk AssessmentHeart Defects, CongenitalInternational Normalized RatioSinoatrial NodePredictive Value of TestsBundle of HisHydrops FetalisCardiac CatheterizationDefibrillators, ImplantableBepridilHemorrhageEndocardiumHeart TransplantationTachycardia, VentricularSurgery, Computer-AssistedChi-Square DistributionMitral ValveEquipment DesignTachycardia, Sinoatrial Nodal ReentryAction PotentialsCohort StudiesTachycardia, Atrioventricular Nodal ReentryBradycardiaAtrioventricular BlockSulfonamidesPrognosisDouble-Blind MethodHeart SeptumHeart Valve Diseases