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 AtrialCryosurgeryPulmonary VeinsHydrops FetalisCoronary SinusTreatment OutcomeRecurrenceFollow-Up StudiesSick Sinus SyndromeDogsFluoroscopyTachycardia, Sinoatrial Nodal ReentryAtrial Function, LeftTachycardia, Atrioventricular Nodal ReentryAction PotentialsCardiac CathetersTime FactorsButylscopolammonium BromideFetal DiseasesAtrioventricular BlockElectrocardiography, AmbulatoryVenae CavaeSotalolProspective StudiesEchocardiography, TransesophagealHeart DiseasesWolff-Parkinson-White SyndromeAtrial AppendageEdrophoniumBundle of HisArrhythmia, SinusDigoxinEndocardiumAtrial SeptumCardiac CatheterizationSinoatrial NodeHeart Defects, CongenitalPostoperative ComplicationsHeart RateEchocardiographyBone ConductionSulfonamidesDysgeusiaMedian NerveSurgery, Computer-AssistedAzygos VeinRetrospective StudiesPacemaker, ArtificialEquipment DesignElectrodesFocus GroupsHeart Septal Defects, AtrialHeartElectric Stimulation