I do caution you though - while it's flattering to say you're after "expert" advise from us - we are expert at experiences, but only a very few members of IHD are actually trained medical professionals andeven then the full extent of your dad's medical situation isn't really known. I'm not trying to put a blanket on anything here, just trying to remind you that you will find plenty of opinion here, and probably most of it spot on but bear in mind that most of us come here with more experience and "on the job wisdom" than medical degrees.