Blalock-Taussig operation

n.
  1. Surgical anastomosis of a subclavian artery to a pulmonary artery in order to direct blood from the systemic circulation to the lungs in cases of congenital malformations of the heart in which an abnormally small volume of blood passes through the pulmonary circuit.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.