They last 10 years ‘or so…’ some up to 17-20, so there’s a variability there, but they fail gracefully so you can monitor which is nice (as another commenter po

They last 10 years ‘or so…’ some up to 17-20, so there’s a variability there, but they fail gracefully so you can monitor which is nice (as another commenter pointed out). Tou can replace with transcutaneous valve replacement (like a stent, through a blood vessel) or open operation