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Definition of Bypass, cardiopulmonary

Bypass, cardiopulmonary: A bypass of the heart and lungs as, for example, in open heart surgery. In this procedure, blood returning to the heart is diverted through a heart-lung machine (a pump-oxygenator) before being returned to the arterial circulation.

Source: MedTerms™ Medical Dictionary
http://www.medicinenet.com/script/main/art.asp?articlekey=2568
Last Editorial Review: 3/19/2012

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