If he's already required to take warfarin for something else, then it may make some sense to continue with a new mechanical valve (I would also look to the On-X). There is a slightly greater risk of an uncontrolled brain or GI bleed with the dosage needed for a valve (heightened because of age and because he is prone to it), but it's not a lot. A downside would be that if he were to need another surgery for a different aneurysm, the warfarin would be a complicating factor. He would also be unable to have a catheter-placed valve if needed later, but it would be highly unlikely that a mechanical valve would ever need replacement anyway.
Otherwise, a tissue valve should last a very long time at his age, and if needed, he would be able to have a percutaneous valve placed later, should it wear out on him.
There will likely be at least two antiplatelet therapy drugs (including Pradaxa) in the US for AFib in 2011 (maybe three, as there are two more in trials or presentation). However, the expense is much greater than Coumadin, so there may be some reluctance by insurance companies to cover any of them for a while.
Best wishes,
Otherwise, a tissue valve should last a very long time at his age, and if needed, he would be able to have a percutaneous valve placed later, should it wear out on him.
There will likely be at least two antiplatelet therapy drugs (including Pradaxa) in the US for AFib in 2011 (maybe three, as there are two more in trials or presentation). However, the expense is much greater than Coumadin, so there may be some reluctance by insurance companies to cover any of them for a while.
Best wishes,