Final answer:
The nurse should instruct the guardians to report pallor and coolness of the toes to the provider as it may indicate a circulation problem or compartment syndrome.
Step-by-step explanation:
The nurse should instruct the guardians to report pallor and coolness of the toes to the provider. Pallor and coolness of the toes can indicate reduced blood flow to the area, which may suggest a circulation problem or compartment syndrome. This is a serious condition that requires immediate medical attention to prevent further complications.