Ventricular arrhythmias are abnormal rapid heartbeats originating in the ventricles - the lower chambers of the heart. It causes the heart to beat too fast, preventing blood from properly circulating to the brain or body.
Common forms of ventricular arrhythmia are ventricular tachycardia and ventricular fibrillation. Both are potentially life-threatening conditions and are commonly associated with heart attacks. In the United States, ventricular fibrillation alone is estimated to be responsible for up to 350,000 fatalities due to sudden cardiac death.
Treatment of ventricular arrhythmia often involves surgery, such as ablation, and medication to regulate the heartbeat. Drug classes commonly used to treat ventricular arrhythmia are anti-arrhythmics, class I-A, anti-arrhythmics, class I-B, anti-arrhythmics, class I-C, anti-arrhythmics, class III, and selective beta-blockers.