Pathfinder PMed me, requesting a post in this thread. I had already replied to the poll, but here's what I was going to send as a PM reply....
Actually, I already have voted in the poll, to the effect that lifespan is largely unaffected by AVR. The main reason I didn't post an opinion is because I thought David Fortune (and others) had phrased it quite adequately.
The item you are allowing to ruin your view of your future is based on results that are positively ancient by AVR standards. And it's not even a study. It's just some student's thesis, done in a look-back statistical style, with entirely questionable sourcing and a tiny population taken from a single medical center's files.
If you're talking about people whose lifespans average 27 years after their AVRs, you're talking about people who had OHS thirty years ago. There is no comparison between heart surgery now and in the nineteen sixties or seventies, or even the eighties.
The largest part of that document is a long discussion about how unsupportable any predictions made by it are. How could you have missed all that and still found a sop of misery to scoop up at the end of it? This is not a viable platform for prognostications of longevity.
Only people who were at the very end of all alternatives underwent surgery in the sixties and seventies. These are people who were on a collision course with death, which was the only reason it was worth the very high risk of the surgery at that time. What kind of base population for picking longevity after surgery is that?
The replacement options the surgeons could pick from were crude by today's standards, and were not unlikely to be a source of concern themselves over time. (Granted, some of them did hold some tough customers over until newer devices were invented - such as RCB.) The tissue replacements available at the time were lucky to make a decade in most people, averaging only six to eight years. Homografts were more successful than xenografts by far, at that time.
Initial operations were quite risky. Second operations were incredibly risky, and there were so few, the surgeons really didn't know what they'd find when they got there. Recovery took months.
Now, initial ops generally carry about a 1% risk, reops, perhaps 2%. Many people, like David Fortune and I, are back making fools of themselves just three days after the surgery. There is just no comparison.
Another major factor in younger OHS alumni is that they are more likely to have other, associated tissue problems, such as aneurysms, later on. The equipment to monitor the rest of the aorta has really not been reliably available until the late 1980s. Lots of folks died early from undetected aneurysms or valve failures caused by expanded aortic roots.
The current method for measuring INR (anticoagulation effectiveness) hasn't been around that long, either. A larger percentage of people died from bleed-outs or strokes, as the numbers were so much less reliable.
The valves (all types) were not that good. They broke, were corroded by bodily acids, fell apart, or calcified much more quickly and often than they do now. People died from that or from the required reoperations. While some people did well enough with the Starr-Edwards or Bjork-Shiley, the first reliably successful valve was the St. Jude.
Then there were the folks who died from the St. Jude Silzone tragedy, and from poorly manufactured tissue valves and homografts from Cry-o-Life and others. Besides being tragic losses to their loved ones, they are curve-killers for look-back type researches like this thesis.
These issues are not a part of the current AVR picture.
If you are otherwise healthy, and your OHS is successful, your chances of living your three-score-and-sixteen or beyond should be excellent, and only slightly less than someone who has not had AVR. If you're bicuspid, the likelihood is much greater than normal that your arteries are clear of cholesterol. So there may even be a longevity-based benefit for you in your bicuspidality (bicupidness? bicuspidivity? bicuspicity?).
Face it: the alternative to AVR is a quick invitation to dance with the Reaper. I intend to ride my AVR out for every moment I can get, and I'm not bashful about my expectations regarding longevity. Hopefully you will conclude that this is the best approach as well, and go forth boldly.
After all, any of us can inadvertently step in front of a speeding garbage truck at any time. I'd hate to have spent the time before that happened just worrying about whether my AVR might affect how many more years I might have left.
Be well,