Welcome Hinsocal !
It sounds like you are preparing yourself well.
I am an advocate of the "Sooner is Better" Approach (for first and second surgeries). That said, it seems to *me* that you are still in the "Watch and Wait" category. I would recommend Echo's at least once a year, and every 6 months if any changes are noted.
Do you have copies of ALL of your Echocardiogram Reports? If not, I highly recommend obtaining them. To track mine, and make changes easier to spot, I put EVERY measurement of every type on a Spread Sheet with a Row dedicated to the Test Date. Doctors seem to act as if all they need to know is your LATEST Test Data. As an Engineer, I like to look for TRENDS and PROGRESSION.
To my (Engineering) Mind, Symptoms are a sign that Damage is being done SO, it is best to watch your test results closely and proceed to surgery when the Numbers say "it is time".
It is wise to interview Surgeons BEFORE you need them, especially if you are looking for a particular valve or specialized procedure such as the ROSS.
With a Bicuspid Valve (and the potential for connective tissue issues common to Bicuspids), I recommend consulting only with the Best of the Best ROSS Surgeons. (Do a Search for "Ross Procedure" or RP to find their names.)
Also check the Personal Info Profile for "StretchL" who went to NY for his Ross with Dr. Paul Stelzer of Beth Israel Hospital, NYC.
http://ps4ross.com , and produced a Photo Album of his operation. His Pre-surgery Posts are Good Reading for anyone contemplating the RP.
The "Pumphead" syndrome has been studied in recent years. Two recommendations to minimize it's effects are to use the Best Filters to catch any particles that may be in your blood, and to lengthen the Body Warming Process (by only a few minutes) to prevent Gas Bubbles from forming in the blood which may cause 'mini-strokes' in the brain.
At 55, you are in the "Gray Area" between Tissue and Mechanical Valve recommendation. IF you can safely hold off a few years, the 'Improved' Carpentier-Edwards Bovine Pericardial Tissue Valve with anti-calcification treatment could well last the rest of your life (>20 years, hoping for 25+). When it comes to mechanical valves, I *believe* in the technical advancements offered by the On-X Valve. See
www.onxvalves.com and
www.heartvalvechoice.com
You may want to browse some more in the Valve Selection Forum (read the "Sticky" posts first, then look for discussions on valves of interest.
If you settle on a particular valve, it would be wise to look for Surgeons that have Experience with that valve or procedure. Note that most surgeons offer only a limited number of valves and procedures.
Good Hunting!
'AL Capshaw'