Is the 2nd hole atrial septal defect dangerous?

Question
Hello doctor,
I have a 2nd hole atrial septal defect, please ask the doctor if the 2nd hole atrial septal defect is dangerous? Thanks for the advice doctor.
Anonymous customer
Answer
Answered by BSCK I Huynh Kim Long - Emergency Department, Vinmec International Hospital Da Nang.
Hello,
With the question “Is the 2nd hole atrial septal defect dangerous? ", the doctor answered as follows:
There are four types of atrial septal defect: first hole atrial septal defect (primary hole), second hole atrial septal defect (secondary hole), sinus venous septal defect, and septal defect. coronary sinus interventricular. Most second-hole atrial septal defects with a diameter of less than 8 mm can close spontaneously within the first 2 to 5 years.
Most atrial septal defects do not show symptoms until adulthood (usually around age 40). Common symptoms are signs of heart failure such as shortness of breath, arrhythmia, edema of limbs, cyanosis of lips, mucous membranes... Therefore, you should register to see a cardiologist specialist for advice. follow-up and appropriate treatment.
If you still have questions about the dangerous 2nd hole atrial septal defect, you can go to a medical facility of Vinmec Health System for early examination and treatment. Thank you for trusting and sending questions to Vinmec. Wishing you lots of health.
Best regards!