As of early this evening Dad is at home and resting comfortably. Dad called and said he's feeling ok, but pretty tired. He squeezed in a nap this afternoon and is going to bed early tonight. :) One of the tests they ran today was to check for a serious infection as the possible cause for all of this. They are gonna keep checking things till they find out what they are dealing with for sure. Dad said one of the reasons he wanted out of the hospital so soon was that his roommate was a nightowl and he got woken up 3 or 4 times last night so wasn't getting enough rest.