American Heart Association. Patent Ductus Arteriosis (PDA) See a picture patent ductus arteriosus American Heart Association. Patent Ductus Arteriosis (PDA) American Heart Association. Patent Ductus Arteriosis (PDA) American Heart Association: Patent Ductus Arteriosus Patent Ductus Arteriosus - PDA See a picture Patent Ductus Arteriosus - PDA