Thanks for getting back to me. We did meet with a nutritionist and have sent yet another email asking this question. My dad's primary care physician was not familiar with the term "free water" and his urologist that performed the surgery said that he does not deal with hyponatremia. I'm wondering if a nephrologist would be the best kind of doctor to help us?
The problem with health care today, especially when going to the ER, is that you get a different doctor and a different nurse, and a different nutritionist every time you go. We get advice from the docs in ER, which they sometimes put in his file, then we have to follow up with someone else.
Anyway - I was mostly looking for experiences people had, not necessarily medical advice.
Thanks agin for responding so quickly.