Cow tissue heart valve for humans

Cow tissue heart valve for humans

The old Archie Dalton couldn't even take a few steps let alone walk up a flight of them. But just two weeks after a minimally invasive mitral valve replacement, the 90-year-old added years onto his life. While his age made him a high risk for conventional open-heart surgery, he was the perfect patient to participate in a worldwide trial to a have heart-valve replacement using a valve derived from the lining of a cow's heart.

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