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-GatedAcetanilidesSulfonamidesSyncopeDogsDelayed Rectifier Potassium ChannelsAction PotentialsHypokalemiaTachycardiaKCNQ1 Potassium ChannelVentricular Premature ComplexesDisopyramideCnidarian VenomsElectrophysiologic Techniques, CardiacHeartHeart RateDrugs, InvestigationalDrug Evaluation, PreclinicalPrenylamineAza CompoundsKCNQ Potassium ChannelsHistamine H1 AntagonistsProcainamideHeart VentriclesRabbitsPotassium ChannelsNAV1.5 Voltage-Gated Sodium ChannelMethoxamineCardiac Pacing, ArtificialPurkinje FibersTachycardia, VentricularElectrophysiologyChromansElectrocardiography, AmbulatoryImidazolidinesVentricular FibrillationSodium Channel BlockersCation Transport ProteinsPiperidinesPacemaker, ArtificialSodium ChannelsDrug Overdose