Is it serious if an atrial septal defect is not treated?

Patient's question:

Recently, I don't know why I've been feeling uncomfortable in my heart. Although I take medication to control it regularly, the effect is not obvious. When I went to the hospital for a check-up, they also prescribed medication. I'm asking if leaving a patent foramen ovale untreated is serious?

Doctor's answer:

If the atrial septal defect is relatively large, it may cause symptoms such as palpitations, chest tightness, and delayed shortness of breath after exercise. The treatment should be selected based on the degree of scarring. It is best to have an echocardiogram at the hospital to assess the specific condition. If it is severe, surgical repair should be performed promptly. Regular follow-up echocardiograms should be conducted to monitor the recovery progress, and during this period, avoid strenuous exercise.

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