A nurse is caring for a bedridden patient at high risk for pressure injury development. Which nursing intervention is the MOST effective in preventing pressure injuries?

Core Principle: Repositioning is the single most effective intervention for pressure injury prevention because it directly reverses the primary cause—prolonged capillary occlusion leading to tissue ischemia.

Standardized Turning Protocol

• Frequency: Reposition bedridden patients at least every 2 hours around the clock. Document each turn using a standardized tool such as the Turning Clock Tool to ensure compliance.
• Positioning Sequence: Rotate through right lateral (30-degree tilt), supine, left lateral (30-degree tilt), and prone positions if not contraindicated. A 30-degree lateral tilt is preferred over a 90-degree side-lying position to avoid direct pressure on the trochanter.
• Body Alignment: Maintain proper anatomical alignment using pillows or foam wedges between bony prominences (e.g., knees, ankles) to prevent skin-to-skin contact and reduce shear forces.

Critical Safety Considerations

• Avoid Donut Cushions: Never use ring-shaped or donut cushions. They concentrate pressure on the surrounding tissue, impairing blood flow and increasing the risk of edema and injury in the center area.
• Avoid Massage: Massaging bony prominences is contraindicated. For patients at risk, the underlying capillaries are already fragile, and massage can cause friction, shear, and microvascular damage.
• Use Support Surfaces: Repositioning should be combined with a high-specification foam mattress or dynamic support surface as part of a multidimensional prevention strategy, but these do not replace the need for manual turning.

Documentation: Record each position change, the patient's skin assessment findings, and tolerance to repositioning in the electronic health record. Use a validated risk assessment scale such as the Braden Scale upon admission and with any change in condition.