A nurse is caring for a client who is at 22 weeks of gestation and has been unable to control her gestational diabetes mellitus with diet and exercise. The nurse should anticipate a prescription from the provider for which of the following medications for the client?

Choice A reason: The mother applying lotion to the newborn's skin requires intervention by the nurse, because it can interfere with the effectiveness of phototherapy and increase the risk of thermal injury. The nurse should instruct the mother to avoid using any lotions, creams, or oils on the newborn's skin during phototherapy.

Choice B reason: The newborn's stools increasing in number does not require intervention by the nurse, because it is a normal and expected outcome of phototherapy. Phototherapy can increase the breakdown and excretion of bilirubin, which can result in more frequent and loose stools.

Choice C reason: A pink rash appearing on the newborn's trunk does not require intervention by the nurse, because it is a common and harmless side effect of phototherapy. The rash usually disappears within a few days after phototherapy is discontinued.

Choice D reason: The newborn's eyes being covered with a mask does not require intervention by the nurse, because it is a standard and essential precaution for phototherapy. The mask protects the newborn's eyes from the harmful effects of the light, such as corneal damage or retinal injury.

Choice A reason: Respiratory rate is the priority nursing assessment for this client, because magnesium sulfate can cause respiratory depression, which is a life-threatening complication. The nurse should monitor the client's respiratory rate closely, and discontinue the infusion if it falls below 12 breaths per minute.

Choice B reason: Bowel sounds is not a priority nursing assessment for this client, because magnesium sulfate does not have a significant effect on the gastrointestinal system. The nurse should assess the client's bowel sounds as part of the routine physical examination, but it is not a critical parameter for this medication.

Choice C reason: Time of last food intake is not a priority nursing assessment for this client, because magnesium sulfate does not interact with food or affect the absorption of nutrients. The nurse should inquire about the client's dietary intake and preferences, but it is not a vital factor for this medication.

Choice D reason: Temperature is not a priority nursing assessment for this client, because magnesium sulfate does not cause fever or hypothermia. The nurse should measure the client's temperature as part of the vital signs, but it is not a key indicator for this medication.