Atrial FlutterCatheter AblationAtrial FibrillationHeartTricuspid ValveElectrocardiographyHeart AtriaHeart BlockPropafenoneAnti-Arrhythmia AgentsPericarditisElectrophysiologic Techniques, CardiacProcainamideElectric CountershockCardiac Pacing, ArtificialHeart RateHeart Conduction SystemBody Surface Potential MappingAtrial Function, RightTachycardia, SupraventricularVena Cava, InferiorDisopyramideFlecainideAmiodaroneTachycardiaAtrial FunctionHeart DiseasesRefractory Period, ElectrophysiologicalAtrial Premature ComplexesTachycardia, Ectopic AtrialHeart Defects, CongenitalTachycardia, ParoxysmalHydrops FetalisCryosurgeryTreatment OutcomeFollow-Up StudiesPulmonary VeinsRecurrenceAtrioventricular NodeElectrophysiologyHeart TransplantationCoronary SinusFluoroscopyHeart FailureArrhythmias, CardiacCardiac CathetersAtrial Function, LeftButylscopolammonium BromideElectrocardiography, AmbulatorySick Sinus SyndromeProspective StudiesDogsTachycardia, Sinoatrial Nodal ReentryFetal DiseasesTime FactorsEchocardiography, TransesophagealVenae CavaeBundle of HisSotalolEdrophoniumEchocardiographyDigoxinAtrial AppendageCardiac CatheterizationArrhythmia, SinusPacemaker, ArtificialPostoperative ComplicationsSulfonamidesAtrial SeptumTachycardia, Atrioventricular Nodal ReentryDysgeusiaRetrospective StudiesEndocardiumAzygos VeinSurgery, Computer-AssistedHeart Septal Defects, AtrialFetal HeartEquipment DesignHeart SeptumCardiac Surgical Procedures