Atrial septal defect (ASD) – Symptoms and causes – Mayo Clinic

Atrial septal defect and pregnancy. Most women with an atrial septal defect can go through pregnancy without problems related to the defect. However, having a larger defect or having complications such as heart failure, arrhythmias or pulmonary hypertension can increase the risk of complications during pregnancy.

https://www.mayoclinic.org/diseases-conditions/atrial-septal-defect/symptoms-causes/syc-20369715