Final answer:
During the first 12 hours following delivery, a nurse should include the intervention of preparing an ice pack for application to the small vulvar hematoma in a postpartum woman's plan of care.
Step-by-step explanation:
In the plan of care for a postpartum woman with a small vulvar hematoma, the nurse should include the intervention of preparing an ice pack for application to the area during the first 12 hours following delivery.