Ventricular Fibrillation VF

 Ventricular Fibrillation VF

This is a chaotic and usually fatal arrhythmia. Individual or small groups of ventricular muscle fibres are activated which means no co-ordinated contraction occurs and is rapidly fatal unless the heart is shocked back into normal rhythm promptly. 

ECG during ventricular fibrillation (VF)

The main emphasis is on prevention of sudden death in those at high risk (primary prevention) and  implanting ICDs in those where an event occurs, is treated and which is likely to recur later (secondary prevention).