Final answer:
The nurse should apply dressing to the wound area before applying the Unna's paste boot for a client with leg ulcers due to chronic venous insufficiency. Keeping the wound clean and applying a dressing under the boot are crucial steps in the treatment process. The boot is typically changed weekly, not every 8 hours.
Step-by-step explanation:
The intervention that the nurse should include in the plan of care for a client being treated with an Unna's paste boot for leg ulcers due to chronic venous insufficiency is B. Apply dressing to wound area before applying the Unna's paste boot. Unna's paste boot is a compression dressing made of gauze and plaster that hardens to form a protective layer over the ulcerated area, improving circulation and promoting healing. It is typically used for patients with venous leg ulcers.
It's essential to first clean the ulceration and apply an appropriate dressing to the wound. This helps in maintaining a moist environment ideal for wound healing, and it can prevent the paste from adhering directly to the wound, which could potentially cause damage when the boot is changed. The Unna's boot should then be applied over the dressing. This type of dressing is usually changed weekly or as per the healthcare provider's instructions, and not every 8 hours as suggested in option D. Additionally, the nurse should check the capillary refill of the toes to monitor circulation. However, the capillary refill check is routine monitoring and not part of the specific intervention for Unna's paste boot application.