Atrioventricular NodeTachycardia, Atrioventricular Nodal ReentryHeart RateHeart Conduction SystemWolff-Parkinson-White SyndromeTachycardia, SupraventricularCatheter AblationNeural ConductionCardiac Pacing, ArtificialHeart BlockHeartElectrocardiographyElectrophysiologyRecurrenceFollow-Up StudiesHeart FailureHeart AtriaHeart DiseasesHeart Defects, CongenitalHeart TransplantationAction PotentialsBone ConductionMedian NerveFetal HeartRefractory Period, ElectrophysiologicalMyocardiumArrhythmias, CardiacHeart ValvesElectrophysiologic Techniques, CardiacUlnar NerveDogsPeripheral NervesAtrioventricular BlockSinoatrial NodeTime FactorsMyocytes, CardiacPurkinje FibersTibial NerveMyocardial ContractionAphasia, ConductionAtrial FlutterElectrodiagnosisModels, CardiovascularAxonsElectric StimulationAtrial FunctionSural NerveAtrial FibrillationAnti-Arrhythmia AgentsConnexin 43Peripheral Nervous System DiseasesNAV1.5 Voltage-Gated Sodium ChannelTachycardiaDiabetic NeuropathiesMotor NeuronsHeart Function TestsSciatic NerveSodium ChannelsPeroneal NerveMyocardial IschemiaHeart SeptumRanvier's NodesHeart Arrest, InducedCarpal Tunnel SyndromeEndocardiumConnexinsBody Surface Potential MappingCardiomyopathy, DilatedBundle-Branch BlockHemodynamicsElectromyographyHeart VentriclesCardiomyopathiesVentricular Function, LeftGap JunctionsPerfusionNerve Fibers, MyelinatedCoronary DiseasePolyneuropathiesElectric ConductivityNerve FibersNeurons, AfferentEchocardiographyRabbitsMyocardial InfarctionTachycardia, ParoxysmalTachycardia, VentricularVoltage-Sensitive Dye ImagingCardiomegalyDisease Models, AnimalRats, Sprague-DawleyEvoked Potentials, SomatosensoryLidocaineMyelin SheathCardiac Complexes, PrematureCardiac Output, LowVagus NerveCardiac ElectrophysiologyVentricular FibrillationFlecainide