Proarrhythmia

Proarrhythmia is defined as the aggravation of an existing arrhythmia or th e development of a new arrhythmia secondary to antiarrhythmic drug. Proarrh ythmic events include drug-induced bradyarrhythmias, atrial and ventricular proarrhythmias. New onset sustained or incessant ventricular tachycardia a nd torsade de pointes can be life threatening. This article reviews the inc idence, aggravating factors, and treatment of proarrhythmia.