A 9-year-old child was in the garage with his father, who was repairing a lawnmower.

A 9-year-old child was in the garage with his father, who was repairing a lawnmower. Some gasoline ignited and caused an explosion. His father was killed, and the child has split-thickness and full-thickness burns over 40% of his upper body, face, neck, and arms. All of the following nursing diagnoses are included on his care plan. Which of these nursing diagnoses should have top priority during the first 24–48 hours postburn?