Though quite unusual, vascular insufficiency of the arm can occur after lig
ation of the subclavian artery. We describe the ischemic consequences of le
ft subclavian interruption in a neonate after subclavian flap angioplasty r
epair (Waldhausen procedure) for coarctation. Subsequent carotid-subclavian
artery bypass was successful in relieving symptoms. (C) 2000 by The Societ
y of Thoracic Surgeons.