It is not certain that there will be sequelae after several years of ventricular septal defect blockage because the procedure and recovery vary from patient to patient, and there are many different types of sequelae, including blocker dislodgement, blood clots, residual shunts, and conduction blocks, which need to be considered in the context of the actual situation. Ventricular septal defect is a congenital heart disease that occurs when a fetus has a tear in the septum of the heart before birth, causing blood to be shunted from the left to the right. Generally, if the heart defect is large and the symptoms are noticeable, then it is important to go to the hospital in time to have the ventricular septal defect blocked. This surgery is low-risk and most patients have a good recovery after the surgery, but some patients may have some sequelae, such as dislodgment of the blocker, blood clots, residual shunt, and conduction block, which are mainly related to the doctor’s improper operation when repairing the heart defect or the patient’s poor tissue healing after the surgery, and the exact time of production is not certain. If the condition is not particularly serious, it will gradually recover on its own after a period of time, and regular checkups are sufficient during this period. However, if the situation is more serious, it requires prompt treatment, such as removal of the blocker, reoperation, or installation of a pacemaker, otherwise it may be life-threatening. Therefore, after the completion of ventricular ischemia occlusion surgery, patients should strictly follow the doctor’s arrangements, maintain healthy living and eating habits, and do a good job of post-operative care. Once the after-effects appear, then they should go to the hospital in time to receive examination and treatment, so as not to aggravate the condition.