The Patent or Persistent Ductus Arteriosus in the Preterm Neonate: Review of the Literature and A Pragmatic Approach to Management
During foetal life, blood flows through the ductus arteriosus (DA) from the pulmonary artery into the aorta, thereby bypassing the lungs. After birth, the DA undergoes active vasoconstriction and eventual closure. A patent ductus arteriosus (PDA) occurs when the DA does not close completely after delivery.
Infertility, defined as ‘failure to achieve a successful pregnancy after 12 months or more of regular unprotected sexual intercourse,’ is prevalent in our society. It is estimated that 1 in 7 heterosexual couples face this problem1 but not all of them actively seek treatment.