Why is lidocaine used for arrhythmias?
Score: 4.9/5 (50 votes) Lidocaine is a class IB antiarrhythmic drug used in the treatment of ventricular arrhythmias, specifically ventricular tachycardia and ventricular fibrillation. Lidocaine blocks cardiac sodium channels shortening the action potential and is used intravenously only for arrhyth...