Cyanotic heart disease is a congenital heart defect which results in low oxygen levels in the blood and causes the child's lips, fingers, and toes to look blue (cyanosis).
Review Date 10/22/2019
Updated by: Michael A. Chen, MD, PhD, Associate Professor of Medicine, Division of Cardiology, Harborview Medical Center, University of Washington Medical School, Seattle, WA. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.