Bundle-Branch BlockHeart Conduction SystemNeural ConductionElectrocardiographyBundle of HisHeart BlockCardiac Pacing, ArtificialAtrioventricular NodeAjmalinePurkinje FibersElectrophysiologic Techniques, CardiacTachycardia, VentricularAtrioventricular BlockArrhythmias, CardiacHeart SeptumCardiac Resynchronization TherapyVectorcardiographyHeart VentriclesCatheter AblationTachycardiaPacemaker, ArtificialBrugada SyndromeTachycardia, ParoxysmalTachycardia, SupraventricularCardiomyopathy, DilatedAction PotentialsTachycardia, Atrioventricular Nodal ReentryProcainamideHeart AtriaElectrophysiologyBody Surface Potential MappingTachycardia, ReciprocatingWolff-Parkinson-White SyndromeSyncopeNAV1.5 Voltage-Gated Sodium ChannelVentricular Dysfunction, LeftDogsHeartVentricular Premature ComplexesTime FactorsAnti-Arrhythmia AgentsModels, CardiovascularBone ConductionVentricular Function, LeftHeart FailureConnexinsMedian NerveVentricular DysfunctionEchocardiographyVentricular FibrillationAxonsCardiomyopathiesDeath, Sudden, CardiacPre-Excitation, Mahaim-TypeTreatment OutcomeSodium ChannelsRefractory Period, ElectrophysiologicalVentricular FunctionMyocardial InfarctionEchocardiography, DopplerPeripheral NervesSyndromeDefibrillators, ImplantableBradycardiaUlnar NerveFollow-Up StudiesElectrocardiography, AmbulatoryCardiac CatheterizationMyocardiumStroke VolumeAcetylthiocholineProspective StudiesPredictive Value of TestsAtrial FibrillationTibial NerveElectric StimulationSinoatrial NodeHeart RateElectrodiagnosisAphasia, ConductionAtrial FlutterSural NerveMotor NeuronsMyocardial ContractionAtrial FunctionNerve FibersMedial Forebrain BundleExercise TestPeripheral Nervous System DiseasesCardiac Resynchronization Therapy DevicesSciatic NervePhonocardiographyRetrospective StudiesThallium RadioisotopesPatient Care BundlesNerve Fibers, MyelinatedPrognosisVentricular Dysfunction, RightHeart Function TestsRanvier's Nodes