Final answer:
The nurse should intervene if the LPN fails to use a draw sheet to move the client up in bed.
Step-by-step explanation:
The nurse should intervene in situation d) The LPN fails to use a draw sheet to move the client. A draw sheet is used to reduce friction and decrease strain on the client's body when moving them up in bed. It is essential for the LPN to use proper technique to ensure the safety and comfort of the client.
Situations a), b), and c) do not require intervention. The client being positioned on their back with a pillow under the head is a proper positioning. Repositioning the client every 2 hours is a standard practice to prevent pressure ulcers. If the AP is using proper body mechanics, it indicates that they are lifting and moving the client in a way that is safe for both the client and themselves.