A nurse is planning to teach a group of newly licensed nurses about hypermagnesemia. Which of the following manifestations should the nurse include in the teaching?

A. A client who has epidural analgesia and weakness in the lower extremities: Lower extremity weakness can be a side effect of epidural analgesia. While it requires monitoring, it is typically not immediately life-threatening unless accompanied by other neurological changes.

B. A client who has diabetes mellitus and an HbA1c of 7.2%: An HbA1c of 7.2% indicates slightly above-target blood glucose control. This is a chronic management concern and does not require immediate intervention.

C. A client who has sinus arrhythmia and is receiving cardiac monitoring: Sinus arrhythmia is often a benign, expected finding, particularly in children or young adults. Continuous monitoring is appropriate, but it is not an emergent concern.

D. A client who has a hip fracture and a new onset of tachypnea: New-onset tachypnea in a client with a hip fracture can indicate a serious complication such as pulmonary embolism or fat embolism syndrome. This requires immediate assessment and intervention.

Rationale for Correct Choices:

• Macrosomia: Post-term infants (≥ 42 weeks) are at higher risk of excessive birth weight due to prolonged nutrient exposure in utero. Larger infants are prone to birth trauma, shoulder dystocia, and hypoglycemia after delivery.

• Meconium aspiration syndrome: Thick green amniotic fluid indicates meconium passage in utero, likely due to fetal stress from prolonged labor and late decelerations. Inhalation of meconium-stained fluid at birth can cause airway obstruction, chemical pneumonitis, and respiratory distress.

Rationale for Incorrect Choices:

• Bronchopulmonary dysplasia: This chronic lung disease is typically a complication in premature infants requiring prolonged mechanical ventilation and high oxygen concentrations, not in post-term newborns.

• Intraventricular haemorrhage: This complication is primarily seen in premature infants with fragile germinal matrix vessels; it is uncommon in term or post-term neonates unless there is severe birth trauma or asphyxia.