Left coronary artery from the pulmonary artery. Physiological considerations of surgical correction.

A 13-year-old boy with anomalous origin of the left coronary artery from the pulmonary artery has been studied before and after anastomosis of the artery to the aorta, using a saphenous vein graft. There was suggestive evidence of improved left ventricular function following operation. The presence of associated mitral regurgitation is suspected from the auscultatory findings.