The Nurse Is Caring for a Premature Infant Who Is

The nurse is caring for a premature infant who is receiving an infusion of a substance in an attempt to close a patent ductus arteriosus. The nurse will explain to the mother that this substance is:

A) indomethacin, which inhibits the synthesis of prostaglandin, the substance that maintains the patency of the ductus arteriosus
B) a hypertonic saline solution that will draw the ductus into closure
C) a cardiac stimulant, which increases the firing in the Purkinje fibers, thus causing a greater force for closing the ductus arteriosus
D) an estrogen product, which will build up the tissue in the ductus arteriosus and cause an eventual closure