A pregnant woman at 37 weeks of gestation has had ruptured membranes for 26 hours. A cesarean section is performed for failure to progress. The fetal heart rate (FHR) before birth is 180 beats per minute with limited variability. At birth, the newborn has Apgar scores of 6 and 7 at 1 and 5 minutes and is noted to be pale and tachypneic. Based on the maternal history, what is the most likely cause of this newborn's distress?

Choice A reason: Providing a dark, quiet environment is an appropriate action for the nurse to implement, because it can help reduce the client's blood pressure and prevent seizures.

Choice B reason: Evaluating neurologic status every 12 hr is not an appropriate action for the nurse to implement, because it is not frequent enough. The nurse should assess the client's neurologic status every 2 to 4 hr, or more often if indicated, to detect signs of cerebral edema or eclampsia.

Choice C reason: Assessing respiratory status every 8 hr is not an appropriate action for the nurse to implement, because it is not frequent enough. The nurse should monitor the client's respiratory status every 1 to 2 hr, or more often if indicated, to detect signs of pulmonary edema or respiratory depression.

Choice D reason: Ensuring that calcium gluconate is readily available is an appropriate action for the nurse to implement, because it is the antidote for magnesium sulfate toxicity. The nurse should have calcium gluconate on hand and know how to administer it in case of an emergency.

Choice E reason: Administering magnesium sulfate IV is an appropriate action for the nurse to implement, because it is the drug of choice for preventing and treating seizures in clients with severe gestational hypertension. The nurse should follow the protocol for magnesium sulfate administration and monitor the client's vital signs, urine output, reflexes, and serum magnesium levels.

Choice A reason: Thrombophlebitis is a condition where a blood clot forms in a vein and causes inflammation and pain. The risk factors for thrombophlebitis include immobility, dehydration, obesity, smoking, and cesarean birth. This client is not at increased risk for thrombophlebitis based on the information given.

Choice B reason: Retained placental fragments are pieces of the placenta that remain in the uterus after delivery and can cause bleeding, infection, or uterine subinvolution. The risk factors for retained placental fragments include placenta previa, placenta accreta, manual removal of the placenta, and incomplete separation of the placenta. This client is not at increased risk for retained placental fragments based on the information given.

Choice C reason: Puerperal infection is an infection of the reproductive tract that occurs within six weeks after delivery and can cause fever, malaise, abdominal pain, and foul-smelling lochia. The risk factors for puerperal infection include prolonged rupture of membranes, prolonged labor, multiple vaginal examinations, operative delivery, and retained placental fragments. This client is not at increased risk for puerperal infection based on the information given.

Choice D reason: Uterine atony is a condition where the uterus fails to contract and retract after delivery and can cause excessive bleeding, hypovolemic shock, and hemorrhage. The risk factors for uterine atony include overdistension of the uterus, prolonged labor, oxytocin use, anesthesia, and trauma. This client is at increased risk for uterine atony due to the large size of the newborn, which can overstretch the uterus and impair its ability to contract.