Thanks for the additional information, @jlibe. I have moved your question about sudden hearing loss and what to do after steroids fail to this existing discussion.
- Sudden Hearing loss--options after steroids are ineffective? https://connect.mayoclinic.org/discussion/sudden-hearing-loss-options-after-steriods-are-ineffective/

I did this so that you can connect with other members who have had a similar experience like @mikepa @mtnyankee @dwi @aviorrok @eileen123 @nurseheadakes. You can also read their posts.