FlecainideAnti-Arrhythmia AgentsDisopyramideMyocytes, CardiacArrhythmias, CardiacPropafenoneEncainideQuinidineCardiac OutputHeartElectrocardiographyNAV1.5 Voltage-Gated Sodium ChannelSodium Channel BlockersTachycardia, SupraventricularDeath, Sudden, CardiacSodium ChannelsSotalolHeart Conduction SystemCardiac Pacing, ArtificialCardiac Surgical ProceduresLidocaineTachycardia, VentricularMexiletineVoltage-Gated Sodium Channel BlockersAtrial FibrillationMyocardiumCardiac Complexes, PrematureCross CirculationAjmalineHeart VentriclesDigoxinPhenothiazinesDogsCardiac CatheterizationLong QT SyndromeHeart RateCardiomegalyBrugada SyndromeCardiac Tamponade