A nurse is providing teaching for a client who has a new application of a long leg cast. Which of the following instructions should the nurse include?

Rationale: A. Keep the casted leg flat for the first 24 hr: The casted leg should not be kept flat for the first 24 hours. Elevating the leg above the heart is important to reduce swelling and promote circulation. Keeping it flat could increase swelling and discomfort. B. Report any drainage from the casted leg: It is important to report any drainage from the cast, as it could indicate infection or complications, such as a wound underneath the cast. Drainage, especially if it is blood-tinged or excessive, requires prompt evaluation. C. Apply a heating pad to the casted leg: Applying a heating pad is not recommended as it could increase swelling or cause burns. It is important to keep the cast cool and dry and avoid applying heat, which could affect the skin or underlying tissue. D. Use a cotton-tip applicator to relieve itching inside the cast: Using a cotton-tip applicator can be harmful because it might push debris deeper into the cast, increasing the risk of infection or injury.