Tachycardia, Ectopic AtrialTachycardiaTachycardia, SupraventricularCatheter AblationTachycardia, VentricularElectrophysiologic Techniques, CardiacTachycardia, ParoxysmalTachycardia, Atrioventricular Nodal ReentryHeart AtriaElectrocardiographyTachycardia, Sinoatrial Nodal ReentryTachycardia, SinusBody Surface Potential MappingHeart Conduction SystemAtrial FibrillationAtrial FlutterCardiac Pacing, ArtificialBundle of HisPulmonary VeinsAnti-Arrhythmia AgentsAtrioventricular NodeCoronary SinusAtrial Function, RightTachycardia, Ectopic JunctionalArrhythmias, CardiacCryosurgeryWolff-Parkinson-White SyndromeElectrocardiography, AmbulatoryFlecainideStellate GanglionPostural Orthostatic Tachycardia SyndromeTreatment OutcomeHeart BlockDogsTachycardia, ReciprocatingFollow-Up StudiesElectrophysiologyAtrial FunctionArrhythmia, SinusSinoatrial NodeRefractory Period, ElectrophysiologicalAtrial Premature ComplexesAmiodaroneHeart RateRecurrenceDefibrillators, ImplantablePacemaker, ArtificialAtrial AppendageBee VenomsTime FactorsFluoroscopyVentricular FibrillationFontan ProcedureAminophyllineHeart Defects, CongenitalMitral ValveElectrodesRetrospective StudiesPostoperative ComplicationsCardiac Surgical ProceduresEchocardiographyAdenosineHeartVentricular Premature ComplexesProspective StudiesPredictive Value of TestsReoperationDisease Models, AnimalProcainamideEndocardiumBundle-Branch BlockPre-Excitation SyndromesAccessory Atrioventricular BundleHeart VentriclesCardiac Complexes, PrematureAction Potentials