causes of central cyanosis children
What is cyanosis? Cyanosis is a bluish color in the skin, lips and nail beds caused by a shortage of oxygen in the blood. Cyanosis occurs because blood with decreased oxygen turns blue or purple. This low-oxygen blood causes a blue-purple tint to the skin. What conditions cause cyanosis? Cyanosis is usually caused by problems of the heart, lungs or blood. Some of the defects or diseases that can cause a child to have cyanosis are: 1  truncus arteriosus. 2  total anomalous pulmonary venous return. 3  transposition of the great arteries. 4  tricuspid atresia. 5  pulmonary atresia. 6  atrioventricular canal defect. 7  pulmonary hypertension. 8  hypoplastic left heart syndrome.