Ken, best wishes on the op. Having been through similar earlier this year I am sure you will be fine, I would recommend you get on and attend the cardiac rehab classses locally after you have recovered from the op. Usually 6-8 weeks after, but depending on your local NHS can a bit of a battle to get referred on. I found it invaluable in re-building fitness, confidence and finding my personal limitations after.
All the best.
Adrian with personal limitations...............I don't believe it
