Torsades de PointesLong QT SyndromeAnti-Arrhythmia AgentsElectrocardiographySotalolPhenethylaminesEther-A-Go-Go Potassium ChannelsAstemizoleTerfenadineCisaprideAtrioventricular BlockBradycardiaHeart BlockBepridilHeart Conduction SystemAmiodaroneArrhythmias, CardiacMagnesium SulfateQuinidineTakotsubo CardiomyopathyDrug-Related Side Effects and Adverse ReactionsMexiletineCardiac Complexes, PrematurePotassium Channel BlockersPotassium Channels, Voltage-GatedAcetanilidesSulfonamidesSyncopeDogsDelayed Rectifier Potassium ChannelsAction PotentialsTachycardiaHypokalemiaKCNQ1 Potassium ChannelVentricular Premature ComplexesDisopyramideElectrophysiologic Techniques, CardiacHeart RateCnidarian VenomsHeartDrugs, InvestigationalDrug Evaluation, PreclinicalPrenylamineAza CompoundsKCNQ Potassium ChannelsHistamine H1 AntagonistsProcainamideHeart VentriclesRabbitsPotassium ChannelsNAV1.5 Voltage-Gated Sodium ChannelCardiac Pacing, ArtificialMethoxamineTachycardia, VentricularPurkinje FibersElectrophysiologyElectrocardiography, AmbulatoryVentricular FibrillationChromansImidazolidinesSodium Channel BlockersCation Transport ProteinsPiperidinesPacemaker, ArtificialSodium ChannelsDrug Overdose