After open heart surgery for atrial septal defect may include surgical incision related sequelae, decreased cardiopulmonary function, etc. 1. Sequelae associated with surgical incision: it is common in people with keloid, usually manifested as scar formation or even bulging, poor healing of incision or even sternum, bulging of sternum, and reaction with surgical sutures. 2. Decrease in cardiopulmonary function: open thoracic surgery can damage the thorax to a certain extent, leading to a decrease in the integrity of the thorax, which further affects the thoracic movement and leads to a decrease in cardiopulmonary function. It is recommended to consult regular hospitals for atrial septal defects, choose reasonable treatment after evaluation by professional doctors, and pay attention to the care of the operated area after surgery to avoid infection.