Which type of support surface is indicated for stage IV pressure ulcers?

• A. Low-air-loss
• B. Standard mattress
• C. Air-fluidized bed
• D. Foam overlay

Answer: (A)

Stage IV pressure ulcers require maximum offloading and a wound-friendly environment. A low-air-loss surface uses many interconnected air cells that are individually controlled, evenly distributing pressure and reducing shear with movement. The continuous airflow creates a cooler, drier microclimate around the skin, helping minimize moisture-related skin breakdown and infection risk while promoting a more favorable healing environment for large, full-thickness wounds. This combination provides substantial offloading without the more extreme intervention of an air-fluidized bed, making it a practical and effective choice for many stage IV cases. In contrast, a standard mattress offers minimal pressure relief, a foam overlay provides only modest relief, and an air-fluidized bed, while very effective, is more resource-intensive and typically reserved for the most complex or non-healing wounds.