Ventricular septal defect can cause chest tightness and shortness of breath. This indicates that the ventricular septal defect has already led to a decline in cardiac function, which may not have reached the severity of heart failure. However, factors such as increased physical activity, emotional changes, infections, etc., can increase the cardiac burden, leading to symptoms of heart failure, manifesting as chest tightness and shortness of breath. In severe cases, it can be accompanied by wheezing and episodes of respiratory difficulty. Therefore, if a patient is found to have a ventricular septal defect, this is a congenital heart disease that requires early surgical treatment. Currently, percutaneous transcatheter closure or thoracotomy for ventricular septal repair can be employed. The specific method of surgery depends on the detailed assessment of the ventricular septal defect.