No real advice, except that I do understand what you're going through. It sounds stupid to say, but - just try to keep yourself as sane as possible for your parents' sake through all this. Be prepared for lots of trips back and forth to the hospital, so try to get as much sleep and eat right as best as you can. It's hard to do, but you have to keep yourself healthy and sane for both of their sakes (how is your mom, by the way?).
I do hope both of your folks are on their way to getting well. If it's any consolation, my dad had a sextuple (yes, you read that correctly - sextuple) bypass in October of 2006. He's 80, and he's doing very well - still as active as ever, and he feels great. Believe me, it's better for your dad to have the surgery, as it could really help him.
