You are correct. My statement was too cryptic and had these assumptions. Depending on age or other circumstances, one could choose a bio-prosthetic valve too.I wonder if you're presupposing a valve replacement with a mechanical valve here and meaning compliance to ACT long term?
That's probably a point to bring up with the surgeon - which prosthetic valve to use, if it comes down to it. (In my case it was straightforward, and the replacement was not needed. So I glossed over this choice.)