No, it hasn't been determined whether or not they'll work on a PVS patient.
Ambien has been given to PVS patients, and its administration is bringing about the return to awareness that is being described with some degree of success.
66 posted on 11/20/2006 5:45:56 PM PST by Ohioan from Florida
(The only thing necessary for the triumph of evil is for good men to do nothing.- Edmund Burke)