| Blalock shunt | Subclavian artery to pulmonary artery shunt to increase pulmonary circulation in cyanotic heart disease with decreased pulmonary flow. (05 Mar 2000) |
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| Blalock, Alfred | <person> U.S. Surgeon, 1899-1965. See: Blalock shunt, Blalock-Hanlon operation, Blalock-Taussig operation, Blalock-Taussig shunt. (05 Mar 2000) |
| Blalock-Hanlon operation | The creation of a large atrial septal defect as a palliative procedure for complete transposition of the great arteries. (05 Mar 2000) |
| Blalock-Taussig operation | An operation for congenital malformations of the heart, in which an abnormally small volume of blood passes through the pulmonary circuit; blood from the systemic circulation is directed to the lungs by anastomosing the right or left subclavian artery to the right or left pulmonary artery. (05 Mar 2000) |
| Blalock-Taussig shunt | A palliative subclavian artery to pulmonary artery anastomosis. (05 Mar 2000) |