• synonyms

right-to-left shunt

  1. The passage of blood from the right side of the heart into the left, as through a septal defect.
  2. The passage of blood from the pulmonary artery into the aorta, as through a patent ductus arteriosus.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.