It depends. On you, your overall health and condition (which has some predictive validity for your longevity), your history, and on the skill and experience of the person whom you hope will do the repairs. Valve repairs are quite routine now. They're still rocket science, but everyone's putting up rockets...aren't they?

My father had a TAVR (trans-catheter aortic valve replacement) last year in July. He had turned 93 three months earlier. He was asked to overnight in the local Heart House accommodations, a small non-profit residence used by the organization for people who need heart remedies but who must come from out of town. Next morning, we drove home uneventfully, and a recent CT scan showed his valve is working nicely. Even better, it's still where they left it.