@Geofd
in case my above post appears to be rude its not meant to be, but its very (critically) important for you to not "glance over things" in this phase of learning; especially if you don't have a history of reading and learning like this.
Think of it more like reading a contract at a construction gig, you can't just skim it over or you may find the builder has shafted you.
with your decision (as I see it) you need to decide on
- a repair or a replacement
- if a replacement then a tissue prosthetic or a mechanical
in the decision for a mechanical probably THE MOST significant issue is your ability to take Anti Coagulation Therapy (which is warfarin). In my post above I identify what are the challenges you face with warfarin and your seizure medication. I personally think its do-able but make no mistake that is not a 100% certainty for a few reasons (not least will be the mandates and dictates of your insurance.
You need to understand those points (and ask more questions here or of me) and (as I mentioned) look the surgeon in the eye and ask hard questions about management.
I'm just trying to be clear and responsible for information I give you and that you fully understand it.
Best Wishes