I’ve had my pig valve for over 10 years and I’ve experienced no ill effects. I cannot feel it beat, it still feels like my own heart. In fact, my valve is still working as well as it did the day they put it in! It’s “perfect” as my cardiologist, Dr. Warnes, says. I had a checkup just over a year ago and she said I didn’t need to come back for 2 years. Theres no calcification, no regurgitation or anything. Sometimes these valves can last way longer than their life expectancy. I’m so thankful I went to Mayo and had the surgery. I wouldnt be here if I hadn’t.