A school nurse is caring for a teenage athlete with a newly casted fractured ankle. Which interventions should the nurse implement to reduce swelling and pain and promote healing? Select all that apply:

Apply a cold pack to the ankle for 20 minutes at a time during the first 24 to 48 hours.

Elevate the affected extremity above the level of the heart

Assess capillary refill, sensation, and movement of the toes

Apply a heating pad over the cast to improve circulation

Encourage weight-bearing ambulation as tolerated during the first 24 hours.