Atrial FlutterAtrial FibrillationElectric CountershockCatheter AblationHeart AtriaAnti-Arrhythmia AgentsElectrocardiographyPropafenoneCardiac Pacing, ArtificialAmiodaroneElectrophysiologic Techniques, CardiacPulmonary VeinsHeart Conduction SystemChronic DiseaseAtrial AppendageAtrial FunctionTricuspid ValveAtrial Function, LeftRefractory Period, ElectrophysiologicalAnticoagulantsProcainamideWarfarinFlecainidePericarditisHeart BlockBody Surface Potential MappingTreatment OutcomeRecurrenceSotalolTachycardia, ParoxysmalAtrioventricular NodeEchocardiography, TransesophagealAtrial Premature ComplexesTachycardia, SupraventricularAtrial Function, RightVentricular FibrillationCryosurgeryFollow-Up StudiesDigoxinTachycardiaThromboembolismElectrocardiography, AmbulatorySick Sinus SyndromePacemaker, ArtificialArrhythmia, SinusDisopyramideProspective StudiesTime FactorsTachycardia, Ectopic AtrialBundle of HisVena Cava, InferiorHeart RateElectrophysiologyHeart Valve DiseasesHeart DiseasesArrhythmias, CardiacEchocardiographyMitral ValveDogsRetrospective StudiesRisk FactorsStrokeEmbolismCardiac Surgical ProceduresCoronary SinusFluoroscopyHydrops FetalisCardiac CathetersBepridilEchocardiography, DopplerAtrial SeptumWolff-Parkinson-White SyndromePostoperative ComplicationsPredictive Value of TestsAction PotentialsCardiac CatheterizationTachycardia, Sinoatrial Nodal ReentrySulfonamidesButylscopolammonium BromideElectrodesSinoatrial NodeEquipment DesignTachycardia, VentricularIncidenceDefibrillators, ImplantableSurgery, Computer-AssistedThrombosisFetal DiseasesHeart FailureMitral Valve StenosisTachycardia, Atrioventricular Nodal ReentryVenae CavaeInternational Normalized Ratiobeta-AlanineEdrophoniumEndocardiumRisk AssessmentHeart VentriclesChi-Square DistributionDysgeusia