Atrial FlutterHeart Conduction SystemCatheter AblationElectrocardiographyHeart BlockNeural ConductionAtrioventricular NodeArrhythmias, CardiacAtrial FibrillationNAV1.5 Voltage-Gated Sodium ChannelElectrophysiologic Techniques, CardiacTricuspid ValveHeart AtriaAnti-Arrhythmia AgentsCardiac Pacing, ArtificialBundle of HisMyocytes, CardiacPropafenonePericarditisCardiac ElectrophysiologyProcainamideHeartElectric CountershockPurkinje FibersBody Surface Potential MappingElectrophysiologyAtrioventricular BlockTachycardia, SupraventricularAtrial Function, RightConnexinsRefractory Period, ElectrophysiologicalAction PotentialsSodium ChannelsAtrial FunctionSinoatrial NodeSinus Arrest, CardiacFlecainideDisopyramideTachycardiaVena Cava, InferiorMyocardiumHeart DiseasesConnexin 43AmiodaroneDeath, Sudden, CardiacHeart VentriclesBrugada SyndromeDogsTime FactorsPacemaker, ArtificialModels, CardiovascularTachycardia, ParoxysmalBradycardiaKearns-Sayre SyndromeMyotonic DystrophyAtrial Premature ComplexesTachycardia, Ectopic AtrialHeart RateSp4 Transcription FactorTreatment OutcomePulmonary VeinsCardiac Surgical ProceduresCryosurgeryHydrops FetalisFollow-Up StudiesImpulse Control DisordersCoronary SinusBundle-Branch BlockGap JunctionsRecurrenceCardiac CatheterizationCardiac OutputSick Sinus SyndromeFluoroscopyProspective StudiesT-Box Domain ProteinsAtrial Function, LeftTachycardia, Atrioventricular Nodal ReentryTachycardia, Sinoatrial Nodal ReentryEchocardiographyCardiac CathetersElectrocardiography, AmbulatoryElectric StimulationHeart Defects, CongenitalCardiomyopathy, DilatedFetal DiseasesButylscopolammonium BromideEchocardiography, TransesophagealWolff-Parkinson-White SyndromeMuscular Dystrophy, Emery-DreifussVenae CavaeMice, TransgenicSotalolMuscle ProteinsDisease Models, AnimalEndocardiumMutationArrhythmia, SinusPostoperative ComplicationsAtrial Appendage