An 8-year-old child was diagnosed with a closed fracture of…

An 8-yeаr-оld child wаs diаgnоsed with a clоsed fracture of the radius at approximately 1400. The fracture was reduced in the emergency department and the arm placed in a cast. At 2300, the child's parent brings them back to the emergency department due to unrelenting pain that has not been relieved by the prescribed opioids. Which action is the priority?