A 1994 report found that of those who were in a vegetative state a month after a trauma, 54% had regained consciousness by a year after the trauma, whereas 28% had died and 18% were still in the vegetative state. For non-traumatic injuries such as strokes, only 14% had recovered consciousness at one year, 47% had died, and 39% were still vegetative. Patients who were vegetative six months after the initial event were much less likely to have recovered consciousness a year after the event than in the case of those who were simply reported vegetative at one month. A New Scientist article from 2000 gives a pair of graphs showing changes of patient status during the first 12 months after head injury and after incidents depriving the brain of oxygen. After a year, the chances that a PVS patient will regain consciousness are very low and most patients who do recover consciousness experience significant disability. The longer a patient is in a PVS, the more severe the resulting disabilities are likely to be. Rehabilitation can contribute to recovery, but many patients never progress to the point of being able to take care of themselves. The medical literature also includes case reports of the recovery of a small number of patients following the removal of assisted respiration with cold oxygen. The researchers found that in many nursing homes and hospitals unheated oxygen is given to non-responsive patients via tracheal intubation.
Notable cases
Tony Bland – first patient in English legal history to be allowed to die
Paul Brophy – first American to die after court-authorization
Sunny von Bülow – lived almost 28 years in a persistent vegetative state until her death
Gustavo Cerati – Argentine singer-songwriter, composer and producer who died after four years in a coma
Prichard Colón – Puerto Rican former professional boxer and gold medal winner who spent years in a vegetative state after a bout
Nancy Cruzan – American woman involved in a landmark United States Supreme Court case
Gary Dockery – American police officer who entered, emerged and later reentered a persistent vegetative state
Eluana Englaro – Italian woman from Lecco whose life was ended after a legal case after spending 17 years in a vegetative state
Elaine Esposito – American woman who was a previous record holder for having spent 37 years in a coma
Lia Lee – Hmong person who spent 26 years in a vegetative state and was the subject of a 1997 book by Anne Fadiman
Martin Pistorius South African man who is a rare example of a survivor as his state progressed to minimally conscious after 3 years, locked in syndrome after another 4 more years, and fully came out of a coma after another 5 years. He is now a web designer, developer, and author. In 2011, he wrote a book called Ghost Boy, in which he describes his many years of being comatose.