Blalock-Taussig shunt
Pronunciation: BLAY-lock TOSS-ig
A surgical connection between systemic and pulmonary circulation used to increase pulmonary blood flow in cyanotic congenital heart disease.
Full Definition
The Blalock-Taussig shunt is a palliative cardiac procedure that creates an artificial connection between a systemic artery and the pulmonary artery to increase pulmonary blood flow in patients with decreased pulmonary circulation. The classic shunt connects the subclavian artery to the ipsilateral pulmonary artery, while the modified version uses a Gore-Tex tube graft. In pediatric anesthesia, these patients require careful management of systemic vascular resistance and preload to maintain adequate but not excessive pulmonary blood flow. Shunt thrombosis is a serious complication requiring immediate intervention.
Usage
Usage note: Always capitalize both names; may abbreviate to BT shunt in informal contexts but spell out in formal documentation.
In Context
- "The infant with tetralogy of Fallot underwent a modified Blalock-Taussig shunt as a bridge to complete repair." — Surgical report
- "Anesthetic management post-Blalock-Taussig shunt requires monitoring for signs of shunt thrombosis." — Postoperative protocol