Some patients with such severe injuries will not survive. Some survive in a persistence vegetative state. Vegetative state refers to a condition where in a patient is usually in a deep coma, unaware of his or her surroundings, is kept alive with artificial support of breathing, nutrition and personal hygiene. A small number of patients with severe head injury make a good recovery with independent existence . Certain severe forms of head injury produce Brain Death.
Brain death refers to a condition when the brain losses all function.
This differs from a persistent vegetative state, where the brain continues to have minimal function, though not enough to sustain consciousness. By law, pronouncement of brain death means the patient is no longer alive. These patients are declared dead and removed from life support after informing the family members. Always wear a seat belt. If possible avoid high-risk sports.