300 Longwood Avenue Boston, MA 02115 (617) 355-6000 My Child Has: Cyanosis Programs that treat this condition Adult Congenital Heart Service   Pulmonary Vein Stenosis   What is cyanosis? Cyanosis is a bluish color in the skin, lips and nailbeds caused by a shortage of oxygen in the blood. Some of the defects or diseases that can cause this oxygen deficit are: Truncus Arteriosus Total Anmalous Pulmonary Venous Return Transposition of the Great Arteries Tricuspid Atresia Pulmonary Atresia Atrioventricular Canal Defect Pulmonary Hypertension Hypoplastic Left Heart Syndrome The information on this website should not be taken as medical advice, which can only be given to you by your personal health care professional. Copyright © Children's Hospital Boston. All rights reserved.