Introduction Propafenone is a class IC antiarrhythmic drug used in the treatment of ventricular and supraventricular arrhythmias.– It is primarily a potent sodium channel blocker, yet also exhibits beta-blocking and calcium channel blocking activity.,, Propafenone is able to induce important ECG changes, namely prolongation of the PR interval, bundle branch block, wide QRS and QT intervals, as well as ventricular tachycardia or bradycardia., It may be associated with significant proarrhythmogenic effects, even at therapeutic doses. A fatal overdose on propafenone […]