Symptomatic coronary-subclavian steal corrected by carotid-subclavian bypass.

Angina recurred after a left internal mammary-to-left anterior descending coronary artery bypass graft. Subsequent development of a subtotal stenosis in the proximal left subclavian artery caused reversal of flow in the patent internal mammary artery graft, which produced an angiographic steal of myocardial perfusion. Angina and ischemia were relieved by reoperation, which consisted of left common carotid-to-left subclavian artery bypass in conjunction with right internal mammary-to-right coronary artery bypass and aorto-to-lateral circumflex coronary artery bypass with reversed saphenous vein.