Also as far as someone in their late 50s or above needing another replacement if/when the tissue valve they get now needs replaced in 10-20 or so years, chances are pretty high they would be would be able to have it replaced in the cath lab (percutaneous valves) and not need OHS. there are quite a few threads here about percutaneous valves like the Sapien that is already approved for higher risk patients. That is one of the reasons why many of the leading centers and surgeons are reccomending tissue valves to younger patients, some (like CCF) even reccomending them for patients in their 40s and up, beside the chances of possibly avoiding a 2nd OHS with percutaneous valves, other reasons are because the newer tissue valves (2nd and 3rd generation) with the anticalcification treatment valves are usually lasting longer and even the most commonly used valves like the CE perimount bovine DO have proven track records since they have been used since the early 80s, and the fact the succes rates even now are very good for 2nd surgeries IF you do end up needing one
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