Tachycardia, Ectopic AtrialTachycardiaCatheter AblationTachycardia, SupraventricularTachycardia, VentricularElectrophysiologic Techniques, CardiacTachycardia, ParoxysmalTachycardia, Atrioventricular Nodal ReentryHeart AtriaElectrocardiographyAtrial FibrillationBody Surface Potential MappingHeart Conduction SystemTachycardia, Sinoatrial Nodal ReentryTachycardia, SinusCardiac Pacing, ArtificialBundle of HisPulmonary VeinsAtrial FlutterAtrioventricular NodeAnti-Arrhythmia AgentsCoronary SinusAtrial Function, RightCryosurgeryAblation TechniquesArrhythmias, CardiacWolff-Parkinson-White SyndromeTachycardia, Ectopic JunctionalTreatment OutcomeElectrocardiography, AmbulatoryFlecainideFollow-Up StudiesStellate GanglionHeart BlockPostural Orthostatic Tachycardia SyndromeDogsTachycardia, ReciprocatingElectrophysiologyRecurrenceAtrial FunctionAtrial Premature ComplexesSinoatrial NodeArrhythmia, SinusRefractory Period, ElectrophysiologicalAmiodaroneHeart RateAtrial AppendagePacemaker, ArtificialFluoroscopyDefibrillators, ImplantableTime FactorsBee VenomsElectrodesVentricular FibrillationRetrospective StudiesPostoperative ComplicationsMitral ValveFontan ProcedureHeart Defects, CongenitalAminophyllineVentricular Premature ComplexesCardiac Surgical ProceduresProspective StudiesEchocardiographyEndocardiumEpicardial MappingDisease Models, AnimalReoperationEquipment DesignAccessory Atrioventricular BundlePredictive Value of TestsHeartAdenosineProcainamidePre-Excitation SyndromesHeart VentriclesBundle-Branch BlockCardiac Complexes, PrematureElectric CountershockAction PotentialsHigh-Intensity Focused Ultrasound AblationPericardiumElectrocoagulationDeath, Sudden, Cardiac