This article presents common misconceptions about the physiologic significance of early ductal shunting and reviews the evidence regarding the preferential use of echocardiography rather than ...

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 ...

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 ...