systemic-to-pulmonary artery shunt
Surgical connection between the systemic and pulmonary circulations to increase pulmonary blood flow in cyanotic heart disease.
Full Definition
A systemic-to-pulmonary artery shunt is a surgical connection created between a systemic artery (usually the subclavian artery) and a pulmonary artery to augment pulmonary blood flow in patients with inadequate native pulmonary circulation. The most common type is the Blalock-Taussig shunt, which may be classic (direct anastomosis) or modified (using a Gore-Tex conduit). These palliative procedures are typically performed as the first stage in patients with complex cyanotic heart disease who are not candidates for immediate complete repair. Shunt patency and size must be carefully balanced to provide adequate oxygenation without causing volume overload.
Usage
Usage note: Specify the type and size of shunt when documenting; distinguish from superior cavopulmonary connections.
In Context
- "A 3.5-mm modified systemic-to-pulmonary artery shunt was placed to augment pulmonary blood flow." — operative note
- "Cardiac catheterization revealed good systemic-to-pulmonary artery shunt function with no evidence of stenosis." — catheterization report