Introduction
Due to improvement in the treatment of congenital heart disease (CHD), most women with CHD now survive to adulthood, get married and try conception, and concomitant CHD is thought to increase perinatal risk1-3. Traditional thinking that cardiac surgery prior to pregnancy improves maternal and fetal outcome in patients with CHD. However, there are a few relevant studies, large samples were less4-6. Moreover, whether and when CHD parturients need surgery still needs to be discussed.
In 2007, Beijing Anzhen Hospital affiliated to Capital Medical University, was designated as the only referral and consultation center of pregnancy with heart diseases in Beijing. Almost all pregnant women with CHD visited Beijing Anzhen Hospital for consultation, treatment, and gave birth to children, which has laid the research foundation for this study.
In the previous study of our team, it was had determined that the risk of maternal complications during pregnancy with CHD was higher than that without CHD. In this study, we will further investigate whether it is better to have surgery before pregnancy or after surgery for pregnant women with CHD.