I'm just asking to see how safe double by pass surgery is. My dad who is 69 years old is going into the Hospital in the next 5 weeks to have this surgery done. Originally the doctors thought that he may only need a stent put in it, however after he had an angiogram done, they found that it was more complicated than that. My dad takes medication for diabetes as he has had it for a couple of years. Will he be okay after the surgery??