An atrial septal defect is an opening in the wall that separates the upper chambers of the heart. It is one of the most common congenital heart defects, which are structural problems that develop ...

Inside your heart are four valves that act as traffic cops to ensure that blood flows in the correct manner. Sometimes these valves may become damaged, which may cause blood to back up into the heart ...

Beijing Zhongke Journal Publising Co. Ltd. Congenital heart defects (CHDs) are the most common birth defects, occurring in approximately 0.9% of live births. Sadly, they are also the leading cause of ...