Tags: Disease.
Ventricular fibrillation (V-fib or VF) is a condition in which there is uncoordinated contraction of the cardiac muscle of the ventricles in the heart making them quiver rather than contract properly. Ventricular fibrillation is the most commonly identified arrhythmia in cardiac arrest patients. While there is some activity the lay person is usually unable to detect it by palpating (feeling) the major pulse points of the carotid and femoral arteries.