Effects of Rehabilitation Programme on Respiratory Function in Patients with Acquired and Intervened Congenital Heart Disease.

Congenital heart defects (CHDs) are heart malformations that occur before birth, and they represent one of the leading causes of neonatal morbidity and mortality. they occur in approximately 1% of newborns and are associated with high morbidity and mortality rates. The etiology of these cardiac anomalies is mostly unknown. around 70-80% of cases are generated by the involvement of multiple affected genes combined with an environmental trigger that, when acting on a susceptible individual, promotes the expression of the damaged genome. maternal diseases during pregnancy or exposure to teratogenic substances are also implicated in the etiology.