A 65-year-old client who attends an adult daycare program and is wheelchair-mobile has redness in the sacral area. Which instruction is most important for the nurse to provide?

The most important instruction for the nurse to provide to the client is to change positions in the chair at least every hour. This is crucial to prevent pressure ulcers, as prolonged pressure on the skin can lead to tissue damage. Repositioning helps relieve pressure on vulnerable areas like the sacrum. Increasing fluid intake can also aid in preventing skin breakdown by maintaining skin hydration. While a vitamin supplement may support overall health, it is not as critical as repositioning to prevent pressure ulcers. Purchasing a new wheelchair is an expensive intervention and should be considered a last resort after implementing less costly preventive measures.