A 12-year-old presents 6 hours after a closed tibial fractur…

A 12-year-old presents 6 hours after a closed tibial fracture sustained during a soccer game. The leg is immobilized in a splint. The child reports escalating pain despite IV opioids and becomes increasingly anxious. Exam reveals a tense, swollen lower leg with pain worsened by passive dorsiflexion of the toes. Distal pulses are present. Which action is most appropriate at this time?

A 3-year-old child is brought to the emergency department 1…

A 3-year-old child is brought to the emergency department 1 hour after being stung by a scorpion while playing at home. The child is inconsolable and has profuse drooling, roving eye movements, tachycardia, and intermittent jerking of the extremities. Vital signs: T 37.4C, HR 168, BP 98/60, RR 30, SpO2 98% on room air. Which intervention is most appropriate at this time?

An 8-year-old child is admitted after being struck by a vehi…

An 8-year-old child is admitted after being struck by a vehicle and sustaining a forearm fracture. The arm is splinted. Six hours later, the nurse reports increasing agitation, repeated requests for pain medication, and pain that seems disproportionate to the injury. The forearm appears swollen and firm. Capillary refill is brisk, and Radial pulse is palpable. Which finding would most strongly confirm the diagnosis and prompt immediate surgical intervention?