recovery from acute renal failure?

[mandyb771]

Hi,

Last Thursday, after he had been vomiting for five days, they finally did bloodwork on Henry, who is 6 years old, and discovered he was in acute renal failure. He was admitted to the hospital and given intensive IV treatment. By Saturday afternoon, his BUN and phosphorous levels had (miraculously) dropped to normal. I am thrilled, but I'm now worried about the potential for lasting kidney damage. They still can't determine the reason for the kidney "insult." We go back Friday to recheck his levels, but I want to make sure he's doing OK this week. He's not vomiting, but since I brought him home yesterday, he's been very lethargic and sleeping constantly, which is very unlike him. I would have thought, after being in a cage and sleeping for four days, getting IV fluids constantly, that he'd be full of energy when he got home. Should I be concerned?