1.How old can a pediatric atrial septal defect be operated? Ventricular septal defect is recommended to be operated over 10 months and weigh more than 9 kg, so that minimally invasive incision can be chosen according to the situation. 2.Can ventricular septal defect heal by itself? Small ventricular septal defects have the possibility of self-healing, such as those under 2~3mm, and the secondary changes in the heart are not obvious, so they can be followed up, and those with heart murmurs that do not close after 3 years of age can be considered for surgery. 3.What is the approximate cost of hospitalization for pediatric atrial septal defect and ventricular septal defect? The cost is about 30,000~40,000. 4.What is the success rate of atrial septal defect and ventricular septal defect? The success rate of surgery is about 100% without severe pulmonary hypertension. 5.What are the advantages of surgical treatment of ventricular septum? Surgical treatment is more thorough than interventional treatment, the incision is about 4-6 cm long, and the incision can also be chosen in the axilla, and the prognosis is better.