Atrial FlutterTachycardiaCatheter AblationTachycardia, VentricularTachycardia, SupraventricularElectrocardiographyAtrial FibrillationTachycardia, ParoxysmalTachycardia, Ectopic AtrialElectrophysiologic Techniques, CardiacTachycardia, Atrioventricular Nodal ReentryAnti-Arrhythmia AgentsTricuspid ValveHeart Conduction SystemCardiac Pacing, ArtificialHeart AtriaHeart BlockPropafenoneProcainamideBody Surface Potential MappingTachycardia, SinusElectric CountershockPericarditisFlecainideAtrial Function, RightAmiodaroneTachycardia, Sinoatrial Nodal ReentryAtrioventricular NodeDisopyramideArrhythmias, CardiacVena Cava, InferiorTachycardia, Ectopic JunctionalCryosurgeryAtrial FunctionBundle of HisRefractory Period, ElectrophysiologicalAtrial Premature ComplexesHydrops FetalisElectrophysiologyPostural Orthostatic Tachycardia SyndromeTreatment OutcomeFollow-Up StudiesElectrocardiography, AmbulatoryRecurrenceTachycardia, ReciprocatingPulmonary VeinsHeart RateWolff-Parkinson-White SyndromeCoronary SinusAtrial Function, LeftFluoroscopyDogsSotalolEndocardiumEchocardiographyFetal DiseasesTime FactorsProspective StudiesSick Sinus SyndromeCardiac CathetersVentricular Function, LeftPacemaker, ArtificialHeart VentriclesDigoxinEchocardiography, TransesophagealCardiac CatheterizationHeart DiseasesVentricular Dysfunction, LeftVentricular FibrillationDefibrillators, ImplantableButylscopolammonium BromideRetrospective StudiesHeart Defects, CongenitalAtrial AppendagePostoperative ComplicationsEdrophoniumVenae CavaeArrhythmia, SinusAtrioventricular BlockHeartSurgery, Computer-AssistedAtrial SeptumAzygos VeinCardiomyopathiesSulfonamidesCardiac Surgical ProceduresEquipment DesignDysgeusiaCardiac Complexes, PrematureHeart SeptumSinoatrial NodeBundle-Branch BlockHeart Septal Defects, AtrialVentricular Premature ComplexesElectrodesElectrocoagulationHypertrophy, Left VentricularTherapeutic IrrigationInfusions, Intravenous