Atrial FlutterHeart AtriaCatheter AblationAtrial FibrillationHeartAtrial Function, RightTricuspid ValveElectrocardiographyAtrial FunctionElectrophysiologic Techniques, CardiacHeart Conduction SystemHeart BlockCardiac Pacing, ArtificialAnti-Arrhythmia AgentsPericarditisPropafenoneHeart RateElectric CountershockVena Cava, InferiorBody Surface Potential MappingProcainamideTachycardia, SupraventricularTachycardiaRefractory Period, ElectrophysiologicalAtrial Premature ComplexesHeart DiseasesPulmonary VeinsHeart NeoplasmsDisopyramideTachycardia, Ectopic AtrialFlecainideAmiodaroneDogsHeart Defects, CongenitalTachycardia, ParoxysmalAtrioventricular NodeCoronary SinusEchocardiography, TransesophagealTreatment OutcomeElectrophysiologySinoatrial NodeBundle of HisEchocardiographyFollow-Up StudiesFluoroscopyArrhythmias, CardiacVena Cava, SuperiorAtrial Function, LeftCryosurgeryHydrops FetalisHeart FailureCardiac CatheterizationSick Sinus SyndromeRecurrenceAtrial SeptumVenae CavaeHeart TransplantationAtrial AppendageHeart Septal Defects, AtrialPacemaker, ArtificialTachycardia, Sinoatrial Nodal ReentryTime FactorsEndocardiumHeart SeptumProspective StudiesTachycardia, Atrioventricular Nodal ReentryMyocardial ContractionCardiac Surgical ProceduresElectrocardiography, AmbulatoryCardiac CathetersAzygos VeinVentricular Function, RightButylscopolammonium BromideFetal DiseasesArrhythmia, SinusMyocardiumPostoperative ComplicationsSotalolFistulaFetal HeartRetrospective StudiesEdrophoniumEquipment DesignDigoxinMyxomaAction PotentialsSulfonamidesHeart InjuriesWolff-Parkinson-White SyndromeVentricular Dysfunction, RightHeart VentriclesSinus of ValsalvaSurgery, Computer-AssistedAtrioventricular BlockVagus NerveElectrodesDysgeusiaEchocardiography, Three-DimensionalElectrodes, ImplantedHuman Rights