I'm 51, and about 14 weeks out from receiving a Medtronics Mosaic porcine valve. This is the premiere porcine valve on the market at this time. I have been delighted with its performance so far, and expect to continue to enjoy it for about 20 years (plus or minus two or three years).
The technology on these xenograft valves was just improved over the last year, so the longevity is a projection, based on someone over 45 years old. My backup choice would be the Edwards Perimount Magna bovine valve, which would likely have a couple of years longer of useful life. The prior version of the porcine valve had a lifespan usually ranging from 15-18 years for the over-45 age group, significantly - sometimes startlingly - less for younger recipients.
I have been working since six weeks out, and am as physically capable now as someone who has not had the surgery. It feels like my heart is just coasting now. My only prescription is 25mg Atenolol in the morning and evening. I also take daily aspirin, by my own choice, just because I am over fifty.
Medtronics also has porcine valves built into configurations with root and/or with aortic sections included, designated the Freestyle and Hancock series valves. The Freestyle series definitely has the same technical updates enjoyed by the Mosaic. I haven't researched the Hancock series as much, so I haven't verified it with that series.
If you want to peruse them:
www.medtronics.com (you will have better results viewing the products if you click on the physicians' side, rather than the patients' side). I am not intending to be an ad for them, but in my humble opinion they do appear to be technically more advanced than their competition at this time.
The echo tech was excited and very impressed with the action and profile of the valve, saying that she would not have been able to tell that it was a replacement, if she had not been told. She actually pulled me aside to look at my videotape from the scan. As she had been very careful
not to show me any of my results before I had the surgery, I have to assume she was genuinely surprised.
I would definitely choose this valve again. Who knows? I may get the chance to in twenty years...
Best wishes,