openheart surgery

open-heart surgery

[oh-puhn-hahrt]
noun
surgery performed on the exposed heart while a heart-lung machine pumps and oxygenates the blood and diverts it from the heart.

Origin:
1975–80

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Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
open-heart surgery
 
n
surgical repair of the heart during which the blood circulation is often maintained mechanically

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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American Heritage
Science Dictionary
open-heart surgery  
Surgery in which the thoracic cavity is opened to expose the heart and the blood is recirculated and oxygenated by a heart-lung machine.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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