Atrial FlutterCatheter AblationAtrial FibrillationElectrophysiologic Techniques, CardiacPulmonary VeinsHeart AtriaAtrial SeptumHeart Conduction SystemCoronary SinusElectrocardiographyTricuspid ValveAtrial AppendageAnti-Arrhythmia AgentsPropafenoneHeart BlockPericarditisTreatment OutcomeProcainamideCardiac Pacing, ArtificialBody Surface Potential MappingMitral ValveElectric CountershockTachycardia, SupraventricularAtrial Function, RightAblation TechniquesVena Cava, InferiorTachycardiaDisopyramideFlecainideAtrial FunctionVentricular Function, LeftAtrial Function, LeftAmiodaroneCryosurgeryTachycardia, Ectopic AtrialTachycardia, ParoxysmalRefractory Period, ElectrophysiologicalAtrial Premature ComplexesVentricular Dysfunction, LeftFollow-Up StudiesAtrioventricular NodeRecurrenceFluoroscopyHydrops FetalisArrhythmias, CardiacElectrophysiologyCardiac CathetersEchocardiographyTime FactorsDogsHypertrophy, Left VentricularEchocardiography, TransesophagealTachycardia, Atrioventricular Nodal ReentryProspective StudiesTachycardia, Sinoatrial Nodal ReentryElectrocardiography, AmbulatorySurgery, Computer-AssistedBundle of HisHeart DiseasesSick Sinus SyndromeButylscopolammonium BromideCardiac CatheterizationVenae CavaeFetal DiseasesHeart VentriclesPostoperative ComplicationsEquipment DesignEndocardiumSotalolRetrospective StudiesPacemaker, ArtificialEdrophoniumHeart Defects, CongenitalWolff-Parkinson-White SyndromeTachycardia, VentricularHeart SeptumHeart RateDigoxinAzygos VeinCardiac Surgical ProceduresElectrodesRadiography, InterventionalSulfonamidesArrhythmia, SinusDysgeusiaHeartTherapeutic IrrigationCardiac VolumeHeart Septal Defects, AtrialElectrocoagulation