Dmcginn,
Hey man,
Only you can decide which valve is right for you. Here is what I selected and a few reasons why I chose it.
I'm 53 and got a tissue (cow) valve last March. The way I finally approached the decision was that both valve types were good choices and would provide positive outcomes, but each choice carried associated risks and responsibilities. Each person should base their decision on their ability and interest in accepting those risks and responsibilities or based on their desire to avoid certain aspects inherent in each choice.
For many mechanical valvers, it's a choice to avoid future surgery that drives their decision. I also struggled with the mech. vs tissue valve decision. MY main struggle was to obtain useful and honest information about the effects of ACT (anti-coagulation therapy) and how it might affect my life-style. For me, I chose a tissue valve and accepted the risk of another re-op in order to avoid what I finally perceived were the daily risks of managing between clotting and bleeding associated with mechanical valves and ACT. I felt that ACT would complicate or would require a drastic change in my life-style .
I had OHS as a kid and I was willing to accept even another (3rd) if necessary. Right now I have no regrets, but I do sometimes think (worry?) about whether I will have adequate insurance if and when a re-op is needed.
Please beware I am not anti-mechanical valve or anti-warfarin. I was on warfarin for 6 months and had no problems.
Good luck, once you decide to have the surgery, either choice is a very good one and should improve the quality and quantity of your life. Once you make you valve choice adjust your life to that choice and never look back.
Take care my friend,
John