Atrial FlutterAtrial FibrillationCatheter AblationHeart AtriaElectrophysiologic Techniques, CardiacElectrocardiographyPulmonary VeinsAnti-Arrhythmia AgentsHeart Conduction SystemElectric CountershockTachycardia, SupraventricularBody Surface Potential MappingCardiac Pacing, ArtificialCatheters, IndwellingTachycardia, Ectopic AtrialWolff-Parkinson-White SyndromeTreatment OutcomeVentricular FibrillationTricuspid ValveTachycardia, ParoxysmalAtrioventricular NodeRecurrenceAmiodaronePropafenoneFollow-Up StudiesHeart BlockTachycardiaTachycardia, Atrioventricular Nodal ReentryAtrial AppendageCathetersAnticoagulantsTachycardia, VentricularAtrial Function, LeftCryosurgeryAtrial FunctionAtrial Premature ComplexesAtrial Function, RightWarfarinFluoroscopyRefractory Period, ElectrophysiologicalCardiac CathetersElectrocardiography, AmbulatoryProcainamideArrhythmias, CardiacPericarditisFlecainideTime FactorsProspective StudiesThromboembolismEchocardiography, TransesophagealTachycardia, Sinoatrial Nodal ReentrySurgery, Computer-AssistedPacemaker, ArtificialCoronary SinusElectrophysiologyBundle of HisVena Cava, InferiorAblation TechniquesDisopyramideEchocardiographyRetrospective StudiesAtrial SeptumSick Sinus SyndromeDogsSotalolRisk FactorsVentricular Premature ComplexesHeart RateStrokeCardiac CatheterizationPostoperative ComplicationsCatheterizationEndocardiumHeart DiseasesPericardiumEquipment DesignCardiac Surgical ProceduresEpicardial MappingElectrocoagulationAccessory Atrioventricular Bundlebeta-AlanineSinoatrial NodeHeart SeptumFeasibility StudiesPredictive Value of TestsDigoxinEmbolismPulmonary Veno-Occlusive DiseaseHeart VentriclesRadiography, InterventionalRisk AssessmentIncidenceArrhythmia, SinusMitral ValveDefibrillators, ImplantableElectrodesVentricular Dysfunction, LeftCardiac Complexes, PrematureVentricular Function, LeftChronic Disease