Acyanotic congenital heart disease

It is a type of congenital malformation. Mild cases are asymptomatic and discovered during physical examination; severe cases may present with dyspnea on exertion, cyanosis, syncope, and older children may have growth retardation. The presence and manifestations of symptoms also depend on the type of disease and the presence of complications. According to hemodynamics combined with pathophysiological changes, it can be divided into three categories: ① no shunt type; ② left-to-right shunt type; ③ right-to-left shunt type.