BB - I don't have the report at the office with me, but I do remember that my AVA just prior to surgery was measured at 0.85 cm2. I was still, for all clinical purposes, asymptomatic. No SOB, no syncope, no angina. I just saw that my exercise tolerance and energy levels were finally decreasing at a very noticeable rate. Until about 6 months prior to surgery, I had been able to push through workouts far beyond what is normally expected for men in their 60's. The last 6 months, I just couldn't keep it up. I was tired much more often than before and I just couldn't keep up the pace on the treadmill. My times for a mile went from 7:30 several years before surgery to 9:30, then 11:30 and eventually to 15:00. I just couldn't compensate, and I was tired of it. Never did have any of the cardinal symptoms, though. I just had a chat with my cardio about it all. He said that the numbers had been saying that it was time for surgery for quite some time but he couldn't then recommend surgery when my exercise tolerance was so far above the norm for my age. Once I showed him the progression and described how I was feeling, we moved on to discussing surgeons.
Now, at about 15 months post-op, I'm still working my way back to my pre-op fitness level. I think I'm still above the norm for my age, but with a pacemaker and two grumpy knees, it is difficult and slow to build back to any reasonable level of running speed. I'm now at about a 13:00 pace, hoping to get back to 10 or 11 minute miles before it is all done.