Alexandra has a life-threatening congenital heart defect. Endovascular surgery can save her life. This little Russian girl has a PDA (patent ductus arteriosus), a condition in which a blood vessel fails to close normally after birth. As a result, she has abnormal blood flow between the aorta and pulmonary artery, two major blood vessels that surround the heart. If her PDA is not closed, she risks heart failure, bleeding in the lungs, problems with lung development, or endocarditis (an infection of the inner lining of the heart). Alexandra is from the Smolensk Region of Russia.