Just had mine replaced 4/24 . I’m 35 YOA with a preexisting condition. I chose a mechanical valve because I’m young and the chance of me having to replace it is unlikely. Surgery went well but ended up with acute respiratory failure and heart electrical issues that made me need a pace maker . I wasn’t in much pain from the surgery though i retained a lot of fluid in my legs and feet which was the most painful part. I was in the hospital 11 days because I spent extra time in ICU. On blood thinners for life . I took almost 2 months off work but I do sit down work. Went to cardiac rehab to help gain strength . And I don’t even remember them taking my breathing tube out because you are so out of it.