Atrial FlutterHeart AtriaCatheter AblationAtrial FibrillationAtrial Function, RightAtrial FunctionTricuspid ValveElectrocardiographyElectrophysiologic Techniques, CardiacHeart Conduction SystemCardiac Pacing, ArtificialHeart BlockAnti-Arrhythmia AgentsPericarditisPropafenoneElectric CountershockBody Surface Potential MappingVena Cava, InferiorProcainamideTachycardia, SupraventricularRefractory Period, ElectrophysiologicalTachycardiaPulmonary VeinsAtrial Premature ComplexesHeart NeoplasmsTachycardia, Ectopic AtrialDisopyramideAtrioventricular NodeFlecainideDogsTachycardia, ParoxysmalAmiodaroneEchocardiography, TransesophagealCoronary SinusSinoatrial NodeElectrophysiologyVena Cava, SuperiorAtrial Function, LeftHeartBundle of HisTreatment OutcomeArrhythmias, CardiacFluoroscopyAtrial AppendageEchocardiographyCryosurgeryAtrial SeptumSick Sinus SyndromeFollow-Up StudiesCardiac CatheterizationHeart RateHydrops FetalisVenae CavaeRecurrenceHeart DiseasesHeart Septal Defects, AtrialPacemaker, ArtificialTachycardia, Sinoatrial Nodal ReentryTachycardia, Atrioventricular Nodal ReentryEndocardiumHeart Defects, CongenitalAzygos VeinCardiac CathetersMyocardial ContractionCardiac Surgical ProceduresHeart SeptumProspective StudiesFistulaElectrocardiography, AmbulatoryTime FactorsMyxomaButylscopolammonium BromideVentricular Function, RightHeart VentriclesFetal DiseasesArrhythmia, SinusSotalolPostoperative ComplicationsAction PotentialsEquipment DesignEdrophoniumWolff-Parkinson-White SyndromeSulfonamidesSinus of ValsalvaGuinea PigsRetrospective StudiesDigoxinSurgery, Computer-AssistedPericardiumVagus NerveElectrodesVentricular Dysfunction, RightDysgeusiaHeart InjuriesAtrioventricular BlockEchocardiography, Three-DimensionalElectrodes, ImplantedElectric StimulationHuman RightsIsoproterenol