Not debating but wondering something, I have NEVER been offered a mechanical valve. Always either a homograph or animal tissue valve. My defect is right sided ( pulmonary valve to be exact and a tricuspid repair last surgery). Does anyone here have a mechanical valve on the right side? Specifically pulmonary? Is there a reason why surgeons would not want a mechanical valve on the right side? I know there is less pressure and pumping action so maybe blood clots more likely to form? Even on thinners? Just wondering out loud I guess. I was never really old enough to make any of those decisions until this last surgery and the only option I was given was tissue.