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Medical Definition of Mustard operation
1. Correction, at the atrial level, of haemodynamic abnormality due to transposition of the great arteries by an intraatrial baffle to direct pulmonary venous blood through the tricuspid orifice into the right ventricle and the systemic venous blood through the mitral valve into the left ventricle. Synonym: Mustard procedure. (05 Mar 2000)