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• n  a serous membrane with two layers that surrounds the heart

• The pericardium (membrane enveloping the heart) was bruised and a large pool of blood was trapped in the heart, impeding its motion.
• Taking his place among his subordinates, he slit open the pericardium and examined the heart.
• The heart itself is contained in a double sack, or pericardium.

Quotes

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• Paul Bosvelt in Sportinglife.com
  Normally the pericardium is smooth but at the moment it is rough because of the inflammation, which causes a lot of pain and keeps me awake at night,Bosvelt told uefa.com. "My pulse cannot go above 140 which is why I am wearing a...