Atrial FlutterStrokeCatheter AblationAtrial FibrillationElectrocardiographyHeart AtriaTricuspid ValvePropafenoneAnti-Arrhythmia AgentsPericarditisHeart BlockElectrophysiologic Techniques, CardiacProcainamideElectric CountershockHeart Conduction SystemCardiac Pacing, ArtificialBody Surface Potential MappingAtrial Function, RightTachycardia, SupraventricularVena Cava, InferiorDisopyramideFlecainideAmiodaroneAtrial FunctionTachycardiaRefractory Period, ElectrophysiologicalAtrial Premature ComplexesTreatment OutcomeTachycardia, Ectopic AtrialTachycardia, ParoxysmalFollow-Up StudiesRecurrenceHydrops FetalisCryosurgeryProspective StudiesRetrospective StudiesPulmonary VeinsElectrophysiologyBrain IschemiaFluoroscopyCoronary SinusArrhythmias, CardiacAtrioventricular NodeTime FactorsCardiac CathetersCerebrovascular DisordersAtrial Function, LeftSick Sinus SyndromeEchocardiography, TransesophagealButylscopolammonium BromideTachycardia, Sinoatrial Nodal ReentryFetal DiseasesElectrocardiography, AmbulatoryHeart DiseasesVenae CavaeRisk FactorsEdrophoniumDogsSotalolAtrial AppendageBundle of HisPostoperative ComplicationsDigoxinAnticoagulantsCardiac CatheterizationAtrial SeptumTachycardia, Atrioventricular Nodal ReentryDysgeusiaEchocardiographyHeart Defects, CongenitalSulfonamidesArrhythmia, SinusPacemaker, ArtificialSurgery, Computer-AssistedAzygos VeinIncidenceHeart Septal Defects, AtrialEquipment DesignThromboembolismCerebral HemorrhageHeart Rate