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n.
surgical removal of the membranous sac surrounding the heart (pericardium). It is used in the treatment of chronic constrictive pericarditis and chronic pericardial effusion (see pericarditis).
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peri·car·di·ec·to·my (per″e-kahr″de-ekґtə-me) [pericardium + -ectomy] surgical removal of all or part of the pericardium.Medical dictionary. 2011.