Can a 1mm ventricular septal defect close on its own?

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Hello doctor. I am 33 weeks pregnant, ultrasound detected 1mm ventricular septal defect. The doctor asked me if the septum can close on its own? How long does it take to self-close? If the vent does not close by itself, what are the signs and measures to detect and intervene as soon as possible? Ask your doctor for advice. Thank you doctor!
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Hello. Some ventricular septal defects (muscular, membranous) have a self-closing rate, especially with small septal holes. It is impossible to determine when to close, so you need to have regular medical examinations.
Echocardiography is a safe and effective method to monitor holes in your heart. From there, your doctor will give you a specific treatment plan.
Thank you for your question to Vinmec Health System. Best regards.
MSc. Dr. Tran Hong Nhat - Interventional Cardiologist - Cardiovascular Center - Vinmec Central Park International General Hospital.