Suzie,
The http://www.dacogen.com site states that your doctor should be aware of any kidney disease (which your doctor is). It says that kidney testing would be done periodically and that the dose may be adjusted accordingly. Go to Google and type in “Dacogen and kidney function” and read what there is. This way you can ask your doctor the right questions. Is this the first chemo treatment that he has tried? Also, has your husband had a history of kidney stones and/or kidney function problems? Is he on Exjade for iron overload?
There is a lot of info out there and perhaps someone on this forum can share a similar experience. Take a deep breath and you will do the right thing. There are alot of prayers being said for the people on this forum.
Take care and keep us posted,
Mary