DDX of complications of the ductus arteriosus

Approach to the DDX of complications of the ductus arteriosus:

  • Patent ductus arteriosus (PDA) causes a left to right shunt which results in cardiomegaly and increased pulmonary blood flow
  • Ductus diverticulum is seen in 33% of patients and should not be confused with a traumatic aortic pseudoaneurysm
  • Calcification of the ligamentum arteriosum is a normal finding
  • Prostaglandin E (PGE) induced gastritis can occur when using PGE to keep a PDA open and is best diagnosed with US
  • Prostaglandin E induced periostitis can occur when using PGE to keep a PDA open and is best diagnosed with radiographs
  • Bowel perforation from indomethacin when using it to close a PDA should be surveilled for with radiographs