Atrial FlutterHeart AtriaCatheter AblationAtrial FibrillationAtrial Function, RightTricuspid ValveElectrocardiographyAtrial FunctionElectrophysiologic Techniques, CardiacHeart Conduction SystemHeart BlockCardiac Pacing, ArtificialPericarditisAnti-Arrhythmia AgentsPropafenoneElectric CountershockVena Cava, InferiorBody Surface Potential MappingProcainamideTachycardia, SupraventricularTachycardiaRefractory Period, ElectrophysiologicalAtrial Premature ComplexesPulmonary VeinsDisopyramideTachycardia, Ectopic AtrialFlecainideHeart NeoplasmsTachycardia, ParoxysmalAmiodaroneAtrioventricular NodeCoronary SinusDogsEchocardiography, TransesophagealElectrophysiologyTreatment OutcomeSinoatrial NodeFluoroscopyArrhythmias, CardiacBundle of HisVena Cava, SuperiorCryosurgeryAtrial Function, LeftHydrops FetalisSick Sinus SyndromeFollow-Up StudiesEchocardiographyRecurrenceAtrial SeptumCardiac CatheterizationAtrial AppendageVenae CavaeTachycardia, Sinoatrial Nodal ReentryHeartHeart DiseasesPacemaker, ArtificialHeart Septal Defects, AtrialHeart RateTachycardia, Atrioventricular Nodal ReentryCardiac CathetersHeart Defects, CongenitalEndocardiumAzygos VeinTime FactorsCardiac Surgical ProceduresProspective StudiesButylscopolammonium BromideElectrocardiography, AmbulatoryHeart SeptumFetal DiseasesVentricular Function, RightArrhythmia, SinusSotalolFistulaPostoperative ComplicationsEdrophoniumMyxomaEquipment DesignMyocardial ContractionSulfonamidesWolff-Parkinson-White SyndromeDigoxinRetrospective StudiesAction PotentialsHeart VentriclesSurgery, Computer-AssistedSinus of ValsalvaVentricular Dysfunction, RightDysgeusiaAtrioventricular BlockElectrodesHuman RightsPericardiumEchocardiography, Three-DimensionalElectrodes, ImplantedVagus Nerve