Patient: Pediatric patient born 15 days. The results of the examination at the county people’s hospital were as follows: Ultrasound examination of the heart: LV: 13mm RV: 7mm AO: 10mm FS: 36% LA: 13mm RA: 12mm PA: 8mm EF: 68% 1. The size of each atrial cavity and the internal diameter of the great vessels were normal, and the descending part of the aortic arch was normal. 2.The thickness and pulsation amplitude of the posterior wall of the ventricle and left ventricle were normal, and the pulsation of the anterior and posterior walls of the aorta was good. The left ventricular long-axis view showed 0.34 cm of septal membrane, and the short-axis view of aorta showed 0.4 cm of continuous echogenic interruption. CDFI: No abnormal blood flow was seen in each valve area. 5. No abnormalities were seen in the pericardial cavity. Ultrasound diagnosis: congenital heart disease – ventricular septal defect (perimembranous part) left to right shunt at ventricular level. What are the chances that the defect will grow well on its own? If it does not grow well, what is the best age for surgery and will it heal completely after surgery, just like a normal child? I would appreciate your help. Doctor: According to the results of the ultrasound examination, your child has a ventricular septal defect, and the defect is not large, about 3-4mm. If the usual symptoms are not obvious and the size of the defect does not change significantly, the defect still has the chance to grow back. Generally, it has a better chance of growing before the age of 3 years, and a very small chance of growing beyond 3 years. Therefore, for children with small ventricular septal defects with no obvious symptoms, we recommend surgery if the defect does not grow back by the age of 3 years. However, before the age of 3 years, the child needs to be reviewed regularly in the hospital to know the function of the heart and the size of the defect. In general, ventricular septal defects are curable and are the same as normal children after surgery. Patient: Hello doctor, I am a patient in Huaibei, Anhui province. My child has congenital heart disease and was examined for a ventricular septal defect. What is your opinion? What is the most appropriate time for surgery and can we do interventional treatment? What is the cost of surgery? Doctor: It is recommended to operate as soon as possible, because the defect is large, so the possibility of intervention is very small. The cost of surgery is about 30-35,000 RMB.