Anomalous left coronary artery is a heart defect in which the left coronary artery, which usually carries blood to a large portion of the heart muscle, does not form correctly. This causes the heart to not receive enough oxygen for it to pump correctly. This heart defect is present at birth and happens during the development of the baby's heart and vessels.
Review Date 5/6/2016
Updated by: Scott I. Aydin, MD, Assistant Professor of Pediatrics, Albert Einstein College of Medicine, Division of Pediatric Cardiology and Critical Care Medicine, The Children's Hospital at Montefiore, Bronx, NY. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.