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intra-aortic balloon device

(ĭn′trə-ā-ôrtĭk)
n.
  1. An inflatable balloon placed into the descending aorta to assist the heart in pumping blood.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.