What is the purpose of a pressure-relieving device?

• A. To reduce pressure on soft tissue only
• B. To increase circulation to nonaffected limbs
• C. To immobilize the patient
• D. To reduce pressure on bony prominences and prevent pressure ulcers

Answer: (D)

Pressure-relieving devices are designed to prevent pressure ulcers by redistributing body weight so that no single area, especially over bones, bears prolonged pressure. When someone is immobile, sustained pressure over bony prominences like the sacrum, heels, and hips can compress capillaries and reduce blood flow, leading to tissue damage. By spreading out pressure or modulating it, these devices maintain tissue perfusion and lower the risk of ulcers. That’s why the best choice is to reduce pressure on bony prominences and prevent pressure ulcers. They aren’t intended to immobilize the patient or specifically boost circulation to nonaffected limbs, and while soft tissue relief may occur, the primary goal is protecting bony areas from pressure.