Atrial FlutterCatheter AblationElectrophysiologic Techniques, CardiacElectrocardiographyAtrial FibrillationHeart Conduction SystemAnti-Arrhythmia AgentsHeart AtriaTricuspid ValveCardiac Pacing, ArtificialTachycardia, SupraventricularProcainamideElectrophysiologyPropafenoneHeart BlockTachycardiaElectric CountershockBody Surface Potential MappingPericarditisAmiodaroneRefractory Period, ElectrophysiologicalWolff-Parkinson-White SyndromeAtrial FunctionAtrioventricular NodeDisopyramideArrhythmias, CardiacTachycardia, Ectopic AtrialFlecainideTachycardia, ParoxysmalAtrial Function, RightVena Cava, InferiorTachycardia, Sinoatrial Nodal ReentryTachycardia, Atrioventricular Nodal ReentryTachycardia, VentricularPre-Excitation SyndromesElectrocardiography, AmbulatoryCryosurgeryDogsSubstrate SpecificityPulmonary VeinsRecurrenceAtrial Premature ComplexesFollow-Up StudiesSotalolBundle of HisTreatment OutcomeHydrops FetalisTime FactorsSick Sinus SyndromeVentricular FibrillationAction PotentialsCoronary SinusFluoroscopyProspective StudiesArrhythmia, SinusSinoatrial NodeCardiac CathetersAtrial Function, LeftButylscopolammonium BromideHeart DiseasesCardiac CatheterizationEndocardiumPacemaker, ArtificialElectrodiagnosisFetal DiseasesEchocardiography, TransesophagealElectrocoagulationVenae CavaeEdrophoniumPostoperative ComplicationsSyncopeHeart RateHeartEpicardial MappingRetrospective StudiesKineticsHeart VentriclesEchocardiographyDigoxinDeath, SuddenAtrial AppendageDefibrillators, ImplantableElectrodes, ImplantedSulfonamidesHeart SeptumDysgeusiaAtrial SeptumHeart Defects, CongenitalCardiac Complexes, PrematureElectrodesPolyneuropathiesSurgery, Computer-AssistedAzygos VeinMolecular Sequence DataMonitoring, PhysiologicInfusions, IntravenousNeural ConductionDeath, Sudden, CardiacEquipment Design