Congenital heart disease (CHD) is the most common heart disease in children. Its incidence accounts for about 0.8% of all births, of which a
Congenital heart disease (CHD) is the most common heart disease in children. Its incidence accounts for about 0.8% of all births, of which about 60% are under the age of 1. The pathogenesis may be related to genetic factors, such as chromosomal translocation and aberration, intrauterine infection, large dose of radiation exposure and drugs. With the rapid development of cardiovascular medicine, a lot of common congenital heart diseases have been diagnosed and treated reasonably, and the mortality has decreased significantly.
Congenital heart disease has a certain genetic factors, but there is not necessarily a genetic factor, it is also associated with environmental factors, early pregnancy infection, medication, radiation and other factors.
The development of congenital heart disease in human embryonic period (early pregnancy 2-3 months), due to formation of disorder of the heart and great vessels of the local anatomical abnormalities, or after birth should not automatically shut down the closed channel (in normal fetal heart), known as congenital heart disease. In addition to individual ventricular septal defect at the age of 5 to heal the opportunity, the vast majority of surgical treatment. In clinical heart failure, cyanosis and dysplasia as the main manifestation.
Congenital cardiovascular disease is the most common type of congenital malformations. The light had no symptoms, found that when severe exertional dyspnea, cyanosis, syncope, older children have stunted growth. The presence or absence of symptoms was related to the type of disease and whether there were complications. According to the hemodynamic and pathophysiological changes, it can be divided into three categories: first, no shunt. Two, left to right shunt. Three, right to left shunt.