The neurology referral would be the most reasonable option. There are several tests to test to extent of brain damage. This would include CT/MRI, EEG, somatosensory evoked potentials, and serum ammonia level (extremely high levels suggest a poor outcome).
Here is a study that looked a prognosis of people in comas. There are 5 categories:
1) Death or persistent coma
2) Persistent vegetative state, in which patients are conscious but are not aware of their surroundings
3) Severe disability, in which patients are conscious but disabled and are dependent upon others for activities of daily living (ADL)
4) Moderate disability, in which patients are disabled but able to perform ADL without assistance
5) Good recovery, in which patients are able to resume normal life, possibly with minor neurological or psychological deficits
Many authors define a good clinical outcome as moderate disability or good recovery, grouping severe disability, persistent vegetative state, and death as poor clinical outcomes. In one review of 500 patients who suffered nontraumatic, anoxic brain injury (excluding drug-induced coma), 16 percent of patients had a good recovery or were left with a moderate disability, 11 percent of patients were left with severe disability, and the remaining 73 percent never improved beyond a vegetative state. Of the patients who remained in a coma at 1 week, 7 percent improved to a good recovery or moderate disability. None of the patients who were in a coma at 2 weeks improved beyond severe disability.
Followup with your personal physician is essential.
This answer is not intended as and does not substitute for medical advice - the information presented is for patient education only. Please see your personal physician for further evaluation of your individual case.
Thanks,
Kevin, M.D.