These are all good questions. You are right - the amount of leak can actually decrease while exercising due to the increase in the heart rate, though whether that actually happens in an individual is complex. If exercising caused the blood pressure to become very high, the leakage could increase. However, in a well-conditioned athlete, I would not expect this to happen to a great extent. I think continuing to exercise in a moderate fashion is OK, though I would avoid heavy-weight lifting and would avoid competitive running. However, most cardiologists would give the same advice that yours did - that it is safer to avoid doing anything strenuous until after the surgery. In a runner, I would recommend an aortic homograft instead of a mechanical valve - you would probably be able to keep running with a homograft.
I am writing you to let you know about a list that myself and several other Heart Valve Replacement patients have created.
I am a 33 year old male who had aortic valve replacement surgery in April of 1999. I often had questions about stuff like what do other people’s spouses think about their valves clicking, to how do the kids deal with Dad having major surgery. Also issues about what is involved in approaching surgery, going through surgery and recovering from surgery. We also discuss the use of coumadin since most of us have to take it for the rest of our lives.
If you would like to join a mailing list along with folks who have been through this kind of stuff before and are facing it in the future, just go to the following URL and sign up.
http://frontpage.inficad.com/~hanky/heart.htm
You will find much help with this list and we all learn from each other.
Hope you can join us,
Hank Eyring