2. Patent ductus arteriosus
Patent ductus arteriosus (PDA) is a heart abnormality that occurs when the ductus arteriosus (the temporary fetal blood vessel that connects the aorta and the pulmonary artery) does not close at birth.
Healthline.com (OMS Preferred Provider)

3. Cardiac operations after patent ductus arteriosus... [Ann Thorac Surg. 2010] - PubMed result
Stenting of the patent ductus arteriosus (PDA) has been recently introduced to palliate patients with duct-dependent pulmonary circulations. We evaluated the surgical outcome of patients who had a previous PDA stent, focusing on their pulmonary ar.....
MedlinePlus (Offsite)

4. Patent ductus arteriosis (PDA) - series: MedlinePlus Medical Encyclopedia
Updated by: Kurt R. Schumacher, MD, Pediatric Cardiology, University of Michigan Congenital Heart Center, Ann Arbor, MI. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.
MedlinePlus (Offsite)

5. Patent Ductus Arteriosus
Patent ductus arteriosus (PDA) is a heart condition caused by the failure of the ductus arteriosus to close. The ductus arteriosus normally is a temporary blood vessel connecting...
my.clevelandclinic.org

6. Patent Ductus Arteriosus
A patent ductus arteriosus (PDA) is a type of congenital (present at birth) heart problem. All babies have a small passageway (called the ductus arteriosus) connecting the pulmonary artery and the aorta, which is...
www.mbhs.org

7. What is patent ductus arteriosus (PDA)?
Patent ductus arteriosus (PDA) is a heart problem that occurs soon after birth in some babies. In PDA, abnormal blood flow occurs between two of the major arteries connected to the heart.
www.nhlbi.nih.gov

8. Patent ductus arteriosus
Patent ductus arteriosus (PDA) is a condition in which a blood vessel called the ductus arteriosus fails to close normally in an infant soon after birth. (The word "patent" means open.)
www.uhseast.com

9. Patent Ductus Arteriosus (PDA)
(Note: before reading the specific defect information and the image associated with it, it will be helpful to review  normal heart function.)
www.americanheart.org

10. Patent Ductus Arteriosus
Patent ductus arteriosus (PDA) is the most common extra cardiac shunt which represents a persistent patency of the vessel that normally connects the pulmonary arterial system and the aorta in the fetus. It accounts for 10-12% of all varieties of c.....
perfline.com