Brugada SyndromeSyndromeElectrocardiographyNAV1.5 Voltage-Gated Sodium ChannelAjmalineBundle-Branch BlockVentricular FibrillationSodium ChannelsDeath, Sudden, CardiacHeart Conduction SystemArrhythmias, CardiacSyncopeAnti-Arrhythmia AgentsFlecainideElectrophysiologic Techniques, CardiacTachycardia, VentricularLong QT SyndromeDefibrillators, ImplantableQuinidineSodium Channel BlockersVoltage-Gated Sodium Channel beta-1 SubunitProcainamideMuscle ProteinsMutation, MissenseElectrocardiography, AmbulatorySignal Processing, Computer-AssistedArrhythmogenic Right Ventricular DysplasiaBody Surface Potential MappingVoltage-Gated Sodium Channel beta-3 SubunitHeart VentriclesSick Sinus SyndromePre-Excitation SyndromesMutationHeart RateDeath, SuddenEndocardiumPedigreePericardiumAction PotentialsMidodrineHeartMexiletineDNA Mutational AnalysisPredictive Value of TestsAutonomic Nervous System DiseasesTerfenadineLidocaineHeredityHeart DiseasesDown SyndromePhenotypeCardiac ElectrophysiologyMetabolic Syndrome XHeart BlockVectorcardiographyHeart ArrestFollow-Up StudiesElectric CountershockWeb BrowserAtrial FibrillationRisk FactorsProspective StudiesDisopyramideBradycardiaPropafenoneChannelopathiesMyocardial InfarctionPatch-Clamp TechniquesHeart AtriaCardiac Pacing, ArtificialGenetic TestingTime FactorsHeterozygote DetectionRetrospective StudiesRisk AssessmentTachycardiaTreatment OutcomeCase-Control StudiesPinacidilDogsChest PainPrognosisGenetic Predisposition to DiseaseNephrotic SyndromeElectrophysiologySensitivity and SpecificitySudden Infant DeathMyocardiumHeterozygoteModels, CardiovascularSjogren's Syndrome