I had my first heart attack in May of last year. Fortunately, I did not have to have any surgery, but I have been on the blood thinners like Fred will have to be on, probably for the rest of his life.
It's not too big of a deal. Not all of them require the food restrictions......Warfarin (Coumadin) is the one that requires you to watch your intake of green vegetables because of the Vitamin K they contain, which can counter the effects of the blood thinner. I've been on that since my heart attack, and it does require blood monitoring, which means you have to go in and give a blood sample every 2 to 4 weeks. The time difference is based on how you test. If the numbers are good....it might be 4 weeks until the next test....if they are not good......then they adjust the dosage and re-test sooner. Warfarin is sort of the generic for blood thinners. There are others, like Eliquis and Xarelto, that do not have the food restrictions and do not require the constant blood monitoring, but they are MUCH, MUCH more expensive than Warfarin. Some insurance companies don't even cover them, but I'm guessing CFH probably has a policy that does.
You do have to be a little more careful to avoid getting cut, or when you have any dental work, or other surgery. You just have to let people know that your blood will not clot as quickly as normal. And, as mentioned, you do bruise a lot more easily and the bruises seem to be a lot larger than normal, and stay with you longer.
He will have to make some adjustments, but I think he will do fine.