Can you tell me any information on reflexology helping coma patients?

It depends on what: you mean by "helping". Most doctors do not know much about reflexology and I am one of those docs, so I cannot tell you. All I can tell you is that the prognosis of a coma depends on what put the patient into a coma in the first place. I would be tempted to say that it cannot hurt, but then again, I would not know. Check with a local reflexologist or somebody with experience in eastern med.