Blalock-Taussig shunt is a surgical procedure used to relieve cyanosis in infants born with congenital heart defects. This procedure involves creating an artificial connection between the pulmonary artery and a nearby artery, which helps to increase blood flow to the lungs. There are other terms used to describe this procedure, such as modified Blalock-Taussig shunt, pulmonary artery banding, and Glenn shunt. The term shunt refers to the artificial connection made during the procedure, while the names Blalock and Taussig are in honor of the physicians who developed this technique. Regardless of the term used, the goal of the procedure is to improve the health and quality of life of infants born with life-threatening heart defects.