Andrew,
I can't understand the doctors position on this. It is just standard practice here to start prednisone for sudden hearing loss no matter what the cause may be. The suppositon is it could be and not to delay. I know it is best to start the steroids with in 72 hours. However, after two or three months it is usually to late for it to be effective.
I think the best you could do is show your doctor what the House Clinic does and any other research on Sudden Onset Hearing Loss, AIED, or SSNHL and how it is treated and ask for it to be tried on her if she is willing. It is short term at the onset and if the hearing returns that is usually the end of it. Unless she has regained her hearing on this treatment and it goes again somewhere in the taper.
When I talked with Dr. Brackmann he said my good ear would be tested within 3 days of surgery and if any hearing loss was found they would immediately start me on steroids. My doctor here also suggested that this is standard practice with any patient after AN surgery where the hearing is completely lost in one ear. My local doctor is very cautious and would not do anything that is the least bit on the edge.
Do you think her hearing is improving? There is some evidence that in cases of sudden hearing loss , some of the patients will have hearing return with out treatment. I am not a doctor and can't give you any advise except to keep researching and try to push the doctor or go to another one. SOON!!! That is if you and your wife think she fits into the catagory that would benefit from Prednisone. I am not sure why your doctor brought up Chemo at this time. Usually they just try steroids to see if the hearing will come back.
Sandy