Atrial FlutterCatheter AblationAtrial FibrillationElectrocardiographyElectrophysiologic Techniques, CardiacHeart AtriaTricuspid ValveAnti-Arrhythmia AgentsHeart Conduction SystemTachycardia, SupraventricularBody Surface Potential MappingElectric CountershockPulmonary VeinsCardiac Pacing, ArtificialHeart BlockTachycardia, Ectopic AtrialPropafenoneCatheters, IndwellingPericarditisProcainamideTachycardiaVentricular FibrillationAtrial Function, RightWolff-Parkinson-White SyndromeTachycardia, ParoxysmalAtrioventricular NodeTreatment OutcomeTachycardia, Atrioventricular Nodal ReentryRecurrenceAmiodaroneFluoroscopyCryosurgeryTachycardia, VentricularFollow-Up StudiesAtrial FunctionAtrial Premature ComplexesVena Cava, InferiorCardiac CathetersCathetersFlecainideRefractory Period, ElectrophysiologicalDisopyramideArrhythmias, CardiacTachycardia, Sinoatrial Nodal ReentryAtrial Function, LeftElectrophysiologyCoronary SinusElectrocardiography, AmbulatoryAtrial AppendageSurgery, Computer-AssistedBundle of HisTime FactorsProspective StudiesEchocardiography, TransesophagealHydrops FetalisAnticoagulantsElectrocoagulationEndocardiumCardiac CatheterizationDogsEquipment DesignAtrial SeptumSick Sinus SyndromePacemaker, ArtificialHeart DiseasesRetrospective StudiesVentricular Premature ComplexesAblation TechniquesPostoperative ComplicationsCatheterizationEchocardiographySotalolRadiography, InterventionalThromboembolismAzygos VeinHeart RateHeart SeptumAccessory Atrioventricular BundleTherapeutic IrrigationElectrodesButylscopolammonium BromideEpicardial MappingCardiac Surgical ProceduresVenae CavaeFeasibility StudiesPericardiumDigoxinFetal DiseasesArrhythmia, SinusHeart Defects, CongenitalAtrioventricular BlockRisk FactorsSinoatrial NodeEdrophoniumWarfarinDefibrillators, ImplantableCardiac Complexes, PrematureRadio WavesSulfonamidesPredictive Value of Tests