Me Too!
At age 59 I had a quad bypass, just like all my male relatives! (Bad genetics on my dad's side!)
I too had been training for that day on my bike for 40+ years.
They do some kind of an evaluation test right after they close up your chest and I scored one of the highest scores. (Bike training pays off!!!)
That was 13 years ago and I am still getting close to 5000 miles a year in on the bike. (I would do more miles but I still work 20 hours a week.)
The point is...
Keep cycling!!! It is GOOD for your body, mind and soul!!!