American Heart Association

Ventricular Fibrillation (VF)- a very rapid and chaotic electrical activity of the bottom of the heart (ventricles) that results in a total failure of the heart to pump blood. This is a life-threatening arrhythmia. Ventricular Tachycardia (VT or V-Tach)- an important abnormal heart rhythm that causes the heart to beat at 100 or more beats/minute. ................
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