The pericardium is a membrane like a sac that surrounds the heart
and its major blood vessels. Normally there is a small amount of fluid between
the pericardium and the heart that helps cushion the heart and reduces friction
between the heart and the pericardium when the heart beats.
Rakesh K. Pai, MD, FACC - Cardiology, Electrophysiology & Stephen Fort, MD, MRCP, FRCPC - Interventional Cardiology
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