A nurse is caring for a 4-year-old child who underwent surgery. The child is unable to verbalize pain reliably. Which pain assessment tool is most appropriate?

A. Fruity (ketone) breath odor is correct because diabetic ketoacidosis (DKA) causes the production of ketone bodies, including acetone, which gives the breath a sweet, fruity odor. This is a classic and easily recognizable sign of DKA.

B. Dehydration is correct because hyperglycemia leads to osmotic diuresis, causing excessive urination and fluid loss. Children with DKA often present with dry mucous membranes, poor skin turgor, tachycardia, and decreased urine output, all indicating dehydration.

C. Hypotension without dehydration is incorrect because hypotension in DKA is typically secondary to dehydration and volume depletion. Hypotension in the absence of dehydration is not characteristic of DKA.

D. Kussmaul respirations (deep, rapid breathing) are correct because metabolic acidosis in DKA stimulates the respiratory center to blow off excess carbon dioxide. These deep, labored respirations are a compensatory mechanism and are a hallmark sign of severe DKA.

E. Weight gain is incorrect because children with DKA usually experience weight loss, not gain, due to fat and muscle breakdown, dehydration, and insulin deficiency.

A. Begin intravenous fluid bolus immediately to correct metabolic acidosis is incorrect because mild metabolic acidosis in a drowning victim is typically secondary to hypoxia. The first priority is ensuring adequate oxygenation and ventilation; fluids may be necessary later for shock or hypotension but are not the immediate priority unless signs of hypovolemia are present.

B. Administer humidified oxygen and monitor respiratory status closely, preparing for possible deterioration is correct because submersion injuries can result in secondary pulmonary injury, including noncardiogenic pulmonary edema, hypoxia, and respiratory distress. The child is showing mild hypoxemia (SpO2 91%), retractions, crackles, and mild metabolic acidosis, indicating early post-drowning respiratory compromise. Oxygen therapy, close monitoring, and preparation for escalation (intubation if needed) are the highest priority interventions in the first hour.

C. Prepare the child for immediate endotracheal intubation and mechanical ventilation is incorrect because the child is currently awake, maintaining airway, and only mildly hypoxic. Immediate intubation is not indicated unless there is worsening respiratory distress, severe hypoxia, or altered mental status.

D. Initiate antipyretic therapy to address hypothermia and prevent fever is incorrect because the child is hypothermic (35.5°C), not febrile. Hypothermia should be corrected with passive or active warming measures, not antipyretics. Fever prevention is not the first priority in this scenario.