early preterm ductal constriction is characterized by great variation. Cite this: Current Controversies in the Diagnosis and Treatment of Patent Ductus Arteriosus in Preterm Infants - Medscape ...

A patent ductus arteriosus (PDA) is a persistent connection between the aorta and the pulmonary artery resulting in left to right shunting. This connection is supposed to close shortly after birth ...

Background: Indomethacine treatment for patent ductus arteriosus (PDA), might lead to vasoconstriction of cerebral blood vessels and under-perfusion of the brain. A lower infusion rate might ...

Cite this: Current Controversies in the Diagnosis and Treatment of Patent Ductus Arteriosus in Preterm Infants - Medscape - Aug 01, 2003. The DA of a very preterm infant has minimal constriction ...