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?

Magnesium sulfate is a drug that is used to prevent seizures associated with pre-eclampsia and to stop preterm labor.However, it can also cause adverse effects such as respiratory depression, which is a condition where the breathing rate becomes too slow and shallow.

Respiratory depression can be life-threatening for both the mother and the baby, so the nurse should monitor the client’s respiratory rate and oxygen saturation closely.

Choice A is wrong because magnesium sulfate can cause hypotension, not hypertension.Hypotension is low blood pressure, which can lead to dizziness, fainting, and shock.

Choice B is wrong because magnesium sulfate can cause hyporeflexia, not hyperreflexia.Hyporeflexia is a reduced or absent reflex response, which can indicate magnesium toxicity.

The nurse should check the client’s deep tendon reflexes regularly and stop the infusion if they are absent.

Choice D is wrong because magnesium sulfate can cause bradycardia, not tachycardia.

Bradycardia is a slow heart rate, which can reduce the blood flow to vital organs.

Assess fetal heart rate and activity.

The nurse should identify that a client who reports a sudden gush of fluid from her vagina is at risk forpremature rupture of membranes (PROM), which can lead toinfection,cord prolapse, andfetal distress.Therefore, the priority action is to assess the fetal heart rate and activity to monitor for signs of hypoxia or distress.

Choice B is wrong because performing a nitrazine test on the fluid is not the first action.A nitrazine test can confirm the presence of amniotic fluid by detecting its alkaline pH, but it is not as urgent as assessing the fetal well-being.

Choice C is wrong because administering oxytocin (Pitocin) IV infusion is contraindicated in this situation.Oxytocin is used to induce or augment labor, but it can causeuterine hyperstimulation,fetal distress, andplacental abruptionif given to a client who has PROM.

Choice D is wrong because placing the client in Trendelenburg position is not recommended for a client who has PROM.Trendelenburg position can increase the risk ofcord prolapseandaspirationin this situation.