Soccermom,
Don't be discouraged by the comment by the surgeon who said the Heartport method is "too risky." I thoroughly explored Heartport as an option for myself, as well as just about every other available option. My universal experience with surgeons and cardiologists was that, if they had no personal experience or training in any procedure, it was automatically too risky or "...not a good idea." I recall one cardiologist tried to talk me out of the SynerGraft valve I have by calling it "Star Trek technology best left to the gullible."
The only reason I did not have a Heartport procedure was because I'd selected a homograft valve with full root replacement. These are big, and not suitable for a Heartport procedure.
There are some special considerations you should know about with the Heatport procedure. The way the aorta is "clamped off" during surgery is via an inflatable balloon inserted through the groin and threaded up to the heart. Should this balloon fail or leak, the Heartport surgery can intantaneously change to a full sternotomy procedure; this is also true if an unexpected event occurs, or if the surgery turns out to be more complicated than expected.
It sounds like a consultation with a plastic surgeon is in order. In collaboration with the heart surgeon, the two can likely come up with some options. I had a minimally invasive "mini-sternotomy" with an incision not much longer than the Heartport method--this may be another option.
Sounds to me like Mayo, Cleveland, or the other top heart centers are your best choices, as others have already mentioned.
Wishing you all the best,
--John