Cyanosis is a bluish discoloration of the skin, mucous membranes, tongue, lips, or nail beds and is due to an increased concentration of reduced hemoglobin (Hb) in the circulation.1 Clinically evident cyanosis typically occurs at an oxygen saturation of 85% or less. 2 Mild cyanosis may be difficult to detect.

Cyanosis is a pathologic condition that is characterized by a bluish discoloration of the skin or mucous membrane1 [1]. The word cyanosis is a derivative of the word cyan, a blue-green color. The presence of cyanosis can pose a serious diagnostic challenge.

Overview What is cyanotic heart disease? In congenital heart disease, one or more abnormal heart structures (defects) are present at birth. There are two types: Cyanotic congenital heart disease: Cyanotic congenital heart disease (CCHD) involves heart defects that reduce the amount of oxygen delivered to the rest of your body.

Acrocyanosis: an overview. In Vivo Transcutaneous Monitoring of Hemoglobin Derivatives Using a Red-Green-Blue Camera-Based Spectral Imaging Technique. Diagnostic considerations in infants and children with cyanosis. HHS Vulnerability Disclosure

Definition Cyanosis is a bluish color of mucous membranes and/or skin. While this is most frequently attributable to increased amounts of unoxygenated hemoglobin (deoxyhemoglobin) in the vasculature, there are other causes of bluish skin color.

Definition Cyanosis is the medical term for a bluish color of the skin and the mucous membranes due to an insufficient level of oxygen in the blood. For example, the lips and fingernails may show cyanosis.

Conditions that may cause of blue hands or feet include: fever. headache. shortness of breath or breathing difficulties. chest pain. sweating profusely. pain or numbness in the arms, legs, hands, fingers, or toes. pallor or blanching of the arms, legs, hands, fingers, or toes. dizziness or fainting..