My dad recently had a quadruple bypass. The day after the surgery he seemed to be doing ok. Later that nite things went bad. Several days, and tests later the doctors found he had developed antibodies to the Heparin given to him during the surgery. They discoverd this also after scaring us to death telling us he may have TTP. He's basically been in a coma like state for over a week now. He may lose some toes, which is actually an improvement. He's had numerous dialysis treatments, he can't breathe right on his own. Well there are just many problems, some things are now getting better but he has such a long way to go and they dont know if he will ever fully recover, physically and mentally. My question is, shouldn't the doctors of tested him for that before surgery? They knew he had heparin before, they knew there was a chance he could have developed an allergy or antibodies to it. It was explained to me that it is uncommon for someone to have a bad reaction to this so they don't test for it. I know they have to give it for the surgery but they could have had things set up to give him directly after the surgery to prevent such a bad reaction. They told me they do that if they know before hand someone has an allergy or antibodies related to heparin. All his symptoms were similar to TTP, and so they at first assumed that must be what was wrong with him, instead of going with the obvious that he was having a reaction to the heparin. So basically I'm just very angry and confused. Can you shed any light on this situation? THANKS!!