For the client mentioned above (nausea/vomiting, Salmonella infection), the nurse anticipates an order for which of the following IV fluids?

Choice A reason: This statement is false. IV morphine sulfate is a pain medication that can be given as needed to the postoperative patient. It does not affect the serum sodium level.

Choice B reason: This statement is false. Dextrose 5% in 0.9% sodium chloride is a hypertonic solution that can be used to treat hyponatremia, or low serum sodium level. It provides both glucose and sodium to the patient.

Choice C reason: This statement is true. 5% dextrose in water is a hypotonic solution that can cause further dilution of the serum sodium level. It can worsen the hyponatremia and increase the risk of cerebral edema and seizures.

Choice D reason: This statement is false. Neurologic assessment Q2 hours is a necessary intervention for a patient with hyponatremia, as it can monitor for signs of neurologic deterioration such as confusion, lethargy, or coma.

Choice A reason: Administration of an anti-diarrheal is not the appropriate management for an 18-month-old with severe dehydration and weight loss secondary to acute diarrhea and vomiting. Anti-diarrheals are not recommended for children under 5 years, as they can have serious side effects, such as paralytic ileus, toxic megacolon, and worsening of dehydration. Anti-diarrheals do not address the underlying cause of diarrhea, and may prolong the duration of infection or toxin exposure.

Choice B reason: Clear liquids, 1 to 2 ounces at a time, are not sufficient to treat an 18-month-old with severe dehydration and weight loss secondary to acute diarrhea and vomiting. Clear liquids, such as water, tea, or broth, do not contain enough electrolytes, such as sodium, potassium, and bicarbonate, to replace the losses from diarrhea and vomiting. Clear liquids may also dilute the blood sodium level and cause hyponatremia, a condition of low sodium in the blood, which can lead to seizures, coma, and death.

Choice C reason: Oral rehydration solution (ORS) is the best management for an 18-month-old with severe dehydration and weight loss secondary to acute diarrhea and vomiting. ORS is a specially formulated solution that contains water, glucose, and electrolytes in the right proportions to replenish the fluid and electrolyte losses from diarrhea and vomiting. ORS can prevent or treat dehydration, and reduce the need for intravenous fluids. ORS can be given by mouth, spoon, cup, or syringe, depending on the child's ability to drink. The amount of ORS to give depends on the degree of dehydration and the weight of the child. The nurse should follow the guidelines from the World Health Organization (WHO) or the local health authority for the appropriate dosage and frequency of ORS administration¹.

Choice D reason: Intravenous fluids are not the first-line management for an 18-month-old with severe dehydration and weight loss secondary to acute diarrhea and vomiting. Intravenous fluids are only indicated for children who have severe dehydration and are unable to drink or tolerate ORS, or who have signs of shock, such as weak pulse, cold extremities, or altered consciousness. Intravenous fluids require hospitalization, skilled personnel, and sterile equipment, and carry the risk of infection, overhydration, or electrolyte imbalance. Intravenous fluids should be given according to the WHO or the local health authority guidelines, and should be switched to ORS as soon as the child is able to drink¹.