Antiarrhythmic action
Its effects are almost same to that of lidocaine
1. It depresses unprovoked automaticity in atrial and ventricular tissues although it does no affect on intraventricular conduction.
2. It causes a promoted conduction through impaired purkinje fibers.
3. It is especially useful for ventricular arrhythmias related to digitalis toxicity or myocardial ischemia.
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