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Dictionary: Blalock-Taussig (BT) shunt

Blalock-Taussig (BT) shunt: a Blalock-Taussig (BT) shunt is a small, soft tube that lets blood in the body be redirected.

Heart surgeons use Blalock-Taussig shunts to connect the subclavian artery (a smaller artery that comes off of the aorta) to the pulmonary artery. This helps increase blood flow to the lungs.