Congenital Heart Disease and Pulmonary Hypertension Severe Eisenmenger Syndrome is a serious cardiovascular disease. Eisenmenger Syndrome also belongs to one of the subtypes of congenital heart disease, which belongs to the type with severe symptoms and poor prognosis. Congenital heart disease is a general term for a group of disorders in which the heart and large blood vessels develop abnormally during fetal life, and are generally categorized into three subtypes according to the shunt: no shunt, left-to-right shunt, and right-to-left shunt. Common disorders include pulmonary stenosis, mitral stenosis, tetralogy of Fallot, and transposition of the great arteries. Eisenmenger syndrome is a complex of congenital cardiovascular malformations including ventricular septal defects, right-sited aorta, and right ventricular hypertrophy. After the onset of the disease, surgery or interventional therapy is generally no longer appropriate to correct the original deformity, and only symptomatic treatment such as relieving pulmonary hypertension, controlling heart failure, and preventing lung infection can be used. If you have congenital heart disease and severe Eisenmenger syndrome with pulmonary hypertension, it is recommended to go to the hospital immediately for active treatment.