A nurse is caring for a toddler who has acute laryngotracheobronchitis and has been placed in a cool mist tent. Which of the following findings indicates that the treatment has been effective?

Choice A reason: Assess the rest of the child's body for a rash.

The child's red marks across the cheeks are characteristic of fifth disease (also known as erythema infectiosum). Fifth disease is caused by parvovirus B19 and typically presents with a bright red rash on the cheeks, often referred to as "slapped cheek" appearance. The rash may eventually spread to other areas of the body, including the arms, trunk, thighs, and buttocks. It is usually mild and self-limiting.

Choice B reason: This option is not appropriate for a rash caused by fifth disease. There is no indication of child abuse or neglect.

Choice C reason: The rash is due to a viral infection and not related to trauma or injury. Questioning the parents is unnecessary.

Choice D reason: While assessing the child's temperature is important in general nursing care, it is not specifically related to the red marks on the cheeks in this case.

Choice A reason: Insulin therapy and fluid replacement are the main treatments for DKA, as they lower the blood glucose level and correct the dehydration and electrolyte imbalance caused by osmotic diuresis and acidosis.

Choice B reason: Glucagon injection and potassium supplements are not indicated for DKA, as they may worsen the hyperglycemia and the hyperkalemia. Glucagon stimulates the liver to release more glucose into the bloodstream, while potassium supplements may increase the risk of cardiac arrhythmias.

Choice C reason: Bicarbonate infusion and sodium restriction are not the first-line treatments for DKA, as they may have adverse effects on the acid-base balance and the fluid status. Bicarbonate infusion may cause paradoxical cerebral acidosis and hypokalemia, while sodium restriction may exacerbate the hyponatremia and the hypovolemia.

Choice D reason: Dextrose infusion and diuretics are contraindicated for DKA, as they may increase the blood glucose level and the dehydration. Dextrose infusion may trigger a rebound hyperglycemia, while diuretics may cause further fluid and electrolyte loss.