A potentially life threatening rhythm disturbance. This disorder originates in the ventricles and is caused by very rapid and unsynchronized electrical activity, causing totally ineffective contraction. The result is a steep decline of cardiac output. This dramatic decline of effective cardiac output means less blood supply to the brain with subsequent loss of consciousness and respiratory arrest.
In fact, ventricular fibrillation is cessation of the most vital processes and without treatment death is the inevitable result. Treatment consists of basic resuscitation processes, including heart massage and artificial respiration.
In addition, defibrillation must be applied for stopping the rapid and chaotic ventricular rhythm by electrical shock.
The success chances of the resuscitation are directly dependent on the early onset of such procedures. Time is absolutely critical and the more time elapses between the onset of resuscitation actions and collapse, the less are the odds for success.
Ventricular fibrillation occurs mainly as a complication of Myocardial Infarction and it is the principal cause of demise prior to hospitalization in the myocardial infarction population of patients.