Congenital heart disease (also called congenital heart defect) results when there are one or more problems with the heart’s structure that exist since birth. Congenital means that you’re born with the defect. Congenital heart disease, also called congenital heart defect, can change the way blood flows through your heart. Some congenital heart defects might not cause any problems. Complex defects, however, can cause life-threatening complications. Your UNC healthcare team can be a vital source of information with resources to learn about the different types of congenital heart defects, and testing that can aid in diagnosis and treatment options.