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balloonseptostomy

[ bə-lōōn′sĕp-tŏstə-mē ]
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n.
The surgical creation of an artificial interatrial septal defect by cardiac catheterization during which an inflated balloon is pulled across the interatrial septum through the oval foramen.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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