Neonatal atrial septal defect 6.4mm may be caused by primary foramen ovale type atrial septal defect or secondary foramen ovale type atrial septal defect. Since the atrial septal defect can be closed naturally, no special treatment is needed. If the atrial septal defect is not closed after 3 years of age, it can be treated by surgery or interventional occlusion.
1. Natural closure: Neonatal atrial septal defects of 6.4mm have the possibility of natural closure in newborns, and the defects can be gradually reduced or even closed as the baby grows, so it is recommended to closely follow up and observe the size of the defects.
2. Surgery: Newborns with atrial septal defects that are caused by the primary septum stopping growing, not fusing with the endocardial cushion and leaving a gap are usually treated with surgical repair, and the commonly used surgical method is atrial septal defect repair, which can be performed by using autologous pericardial slices and blocking umbrellas to seal the defect. Because of the trauma to newborns, it is recommended to have surgery between 3 and 5 years old.
3. Interventional occlusion: If the atrial septal defect is secondary to a foramen ovale, and the defect is 6.4 mm, regular follow-up is needed, and the defect may close on its own before 1.5 years of age. If it is not possible to close by itself, it is recommended to perform occlusion intervention around 3 years old. The occluder is delivered through femoral vein puncture, arrives at the defect, and opens the occluder to block the empty space and close the defect.
Newborns with atrial septal defects of 6.4mm are recommended to consult a doctor in time and choose the appropriate treatment under the guidance of a specialized doctor.