Word: pericardium
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Dates: during 2000-2009
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...destroyed far more of the heart's blood-pumping machinery. And it just missed an artery in Nathan's chest that could have bled enough to send the boy into shock. "As it was," says Williams, "there couldn't have been more than a thimbleful of blood in the pericardium [the membrane surrounding the heart]. He needed no transfusion, which is fairly unusual for a child undergoing heart surgery...