title: Nonopacification of patent ductus arteriosus by aortography in patients with large ventricular septal defects.
mesh_terms: D001794:Blood Pressure; D002648:Child; D002675:Child, Preschool; D004374:Ductus Arteriosus, Patent / Q000150:complications / Q000000981:diagnostic imaging* / Q000503:physiopathology; D006345:Heart Septal Defects, Ventricular / Q000150:complications / Q000000981:diagnostic imaging* / Q000503:physiopathology; D006801:Humans; D007223:Infant; D011859:Radiography; D014655:Vascular Resistance