Which action is not recommended for a patient with a newly applied cast?

• A. Elevate the limb to reduce swelling
• B. Keep the cast dry with a protective cover
• C. Inspect for circulation and sensation regularly
• D. Use a heating pad on the cast

Answer: (D)

When a cast is newly applied, protecting skin and maintaining good neurovascular function under the cast are essential. Elevating the limb helps reduce swelling and improves circulation, which lessens pressure inside the cast. Keeping the cast dry with a protective cover prevents moisture from weakening padding and causing skin irritation or infection. Regularly checking circulation and sensation allows early detection of problems like numbness, tingling, cool or pale extremities, or increasing pain, all of which could signal impaired blood flow or nerve compression and need prompt assessment.

Heating pads should not be used on a new cast. The cast acts as an insulator, so heat can build up and cause burns or tissue damage beneath the cast. It can also soften or deform the cast material, compromising immobilization. So, the action not recommended is applying a heating pad to the cast.