A case of Coronary-Subclavian Steal Syndrome.

Surgical bypass of left coronary artery disease using the internal mammary artery (IMA) as a conduit is standard practice. Adequate blood supply to the IMA is dependent on normal flow in the subclavian artery. Stenosis of the subclavian can impair coronary supply from the internal mammary artery. This may create a steal syndrome whereby the left arm may rob the coronary system of flow especially during arm exercise. In the present report a case of angina with left coronary system steal via an internal mammary graft due to atherosclerotic subclavian stenosis. Successful treatment of the anginal symptoms by native coronary stenting is described.