Cyanotic congenital heart disease with increased pulmonary blood flow

Pediatricians encounter children with systemic cyanosis on a daily basis. There are numerous reasons for cyanosis in neonates and infants. Congenital heart defects may cause cyanosis. An obvious cardiac reason for cyanoisis is decreased pulmonary blood flow (transposition of the great arteries, truncus arteriosus, and total anomalous pulmonary venous return). As neonates are discharged from the hospital very soon after birth, this magnifies the importance of each physical examination.