Torsades de PointesLong QT SyndromeAnti-Arrhythmia AgentsElectrocardiographySotalolPhenethylaminesEther-A-Go-Go Potassium ChannelsAstemizoleTerfenadineCisaprideAtrioventricular BlockBradycardiaHeart BlockArrhythmias, CardiacBepridilHeart Conduction SystemAmiodaroneMagnesium SulfateQuinidineTakotsubo CardiomyopathyDrug-Related Side Effects and Adverse ReactionsMexiletineCardiac Complexes, PrematurePotassium Channel BlockersPotassium Channels, Voltage-GatedSulfonamidesAcetanilidesSyncopeDogsDelayed Rectifier Potassium ChannelsAction PotentialsHypokalemiaTachycardiaKCNQ1 Potassium ChannelVentricular Premature ComplexesDisopyramideElectrophysiologic Techniques, CardiacCnidarian VenomsHeartHeart RateDrugs, InvestigationalDrug Evaluation, PreclinicalPrenylamineAza CompoundsHistamine H1 AntagonistsKCNQ Potassium ChannelsHeart VentriclesProcainamideRabbitsPotassium ChannelsNAV1.5 Voltage-Gated Sodium ChannelMethoxamineCardiac Pacing, ArtificialPurkinje FibersTachycardia, VentricularElectrophysiologyElectrocardiography, AmbulatoryChromansImidazolidinesVentricular FibrillationSodium Channel BlockersCation Transport ProteinsPiperidinesPacemaker, ArtificialSodium ChannelsDrug Overdose