Atrial FlutterCatheter AblationHeart Conduction SystemNeural ConductionAtrial FibrillationElectrocardiographyTricuspid ValveHeart BlockHeart AtriaElectrophysiologic Techniques, CardiacAnti-Arrhythmia AgentsPropafenonePericarditisProcainamideCardiac Pacing, ArtificialElectric CountershockBody Surface Potential MappingTachycardia, SupraventricularAtrioventricular NodeAtrial Function, RightRefractory Period, ElectrophysiologicalDisopyramideFlecainideAtrial FunctionVena Cava, InferiorTachycardiaAmiodaroneTachycardia, ParoxysmalElectrophysiologyArrhythmias, CardiacAtrial Premature ComplexesTachycardia, Ectopic AtrialCryosurgeryHydrops FetalisPulmonary VeinsCoronary SinusRecurrenceTreatment OutcomeSick Sinus SyndromeFollow-Up StudiesDogsFluoroscopyTachycardia, Sinoatrial Nodal ReentryAtrial Function, LeftTachycardia, Atrioventricular Nodal ReentryAction PotentialsCardiac CathetersButylscopolammonium BromideTime FactorsAtrioventricular BlockFetal DiseasesElectrocardiography, AmbulatoryVenae CavaeSotalolEchocardiography, TransesophagealWolff-Parkinson-White SyndromeProspective StudiesHeart DiseasesAtrial AppendageEdrophoniumBundle of HisArrhythmia, SinusDigoxinAtrial SeptumEndocardiumSinoatrial NodeCardiac CatheterizationHeart Defects, CongenitalHeart RatePostoperative ComplicationsEchocardiographyBone ConductionSulfonamidesDysgeusiaMedian NerveSurgery, Computer-AssistedAzygos VeinPacemaker, ArtificialRetrospective StudiesElectrodesEquipment DesignHeart Septal Defects, AtrialHeart