A nurse is caring for a pre-term newborn who has a patent ductus arteriosus (PDA).

Which of the following medications should the nurse expect to administer to close the ductus arteriosus?

Report any increase in vaginal discharge to the provider.This is because an increase in vaginal discharge can indicate an infection, which can trigger preterm labor or cause complications for the mother and the baby.

Choice A is wrong because sexual intercourse is not contraindicated for women who have preterm labor that was successfully stopped with tocolytic therapy, unless they have other risk factors such as placenta previa or ruptured membranes.

Choice B is wrong because drinking at least 3 L of fluids per day is not necessary for women who have preterm labor that was successfully stopped with tocolytic therapy, unless they have dehydration or oligohydramnios.

Choice D is wrong because pelvic floor exercises are not recommended for women who have preterm labor that was successfully stopped with tocolytic therapy, as they can increase uterine activity and cause contractions.

Tocolytic therapy is the use of drugs to delay delivery for a short time (up to 48 hours) if a woman begins labor too early in her pregnancy.

The purpose of tocolytic therapy is to allow time for the administration of corticosteroids or other medicine.

Infection on speculum examination.

Infection is a major cause of preterm labor and can lead to serious complications for the mother and the fetus.

Infection can be detected by a speculum examination that shows signs of inflammation, such as erythema, edema, discharge, or odor.

Infection can also be confirmed by laboratory tests, such as culture, gram stain, or polymerase chain reaction.Infection should be treated promptly with antibiotics and other supportive measures.

Choice B. Bleeding on speculum examination is wrong because bleeding is not a direct cause of preterm labor, but rather a sign of other conditions that may increase the risk of preterm labor, such as placenta previa, placental abruption, or cervical trauma.Bleeding should be evaluated further to determine the source and severity of the hemorrhage and to manage any complications.

Choice C. Positive fetal fibronectin test (FFN) is wrong because a positive FFN test indicates the presence of fetal fibronectin in the cervical or vaginal secretions, which is a marker of increased risk of preterm labor, but not a definitive marker.