cyanotic heart disease definition
Definition. Cyanotic heart disease refers to a group of many different heart defects that are present at birth (congenital) that result in a low blood oxygen level.ainting (syncope) and chest pain may occur. Other symptoms depend on the type of cyanotic heart disease, and may include: 1  Feeding problems or reduced appetite, leading to poor growth. 2  Grayish skin. 3  Puffy eyes or face. 4  Tiredness all the time.