Clinical Pharmacology of Antiarrhythmic Drugs

Antiarrhythmic drugs are agents used to prevent, suppress, or treat abnormal heart rhythms (arrhythmias). These drugs act by modifying the electrical impulses within the myocardium, aiming to restore normal sinus rhythm or control ventricular rate. Their clinical use requires careful consideration because they may themselves provoke arrhythmias (proarrhythmic effect).