Re: End stages of Hep C
My father in law had the bloating too (he has hep c and cirrhosis, but not end stage) and he ended up needed a water pill because he was retaining too much fluid. After he got on one, his stomach did deflate, for lack of a better word. He also had a bleeding ulcer and verices in his esophagus. He did end up in the hospital from them. That's his experience though, that may or may not be what's going on with your dad.
I hope your dad feels better. My fingers are crossed.