Hello richardfalls. I had MVD surgery in June of this year. Mine was on the right side and I did lose the hearing in my right ear for about a month and a half after surgery. I could also hear my heartbeat in that ear. It was very annoying. My hearing has returned to normal and the best thing of all is that I no longer have the TN pain. As soon as I get weaned off of the Carbamazapine I think I'll be pretty much back to normal.